An automatic sputum suction device

Abstract

The present application discloses an automatic sputum suction device, which comprises a working pipe unit, a gas adjusting unit and a control unit. The working pipe unit includes a main oxygen supply pipe and a main sputum suction pipe. The gas adjusting unit includes an oxygen supply module for supplying oxygen to the main oxygen supply pipe, a gas suction module for sucking gas, and a breath sensor for measuring the breathing state of a user. The control unit is electrically connected to the oxygen supply module, the gas suction module and the breath sensor. When the breath sensor measures that the user is in an inhalation state, the control unit controls the oxygen supply module to supply oxygen to the main oxygen supply pipe. When the breath sensor measures that the user is in an exhalation state, the control unit controls the gas suction module to suck gas from the main sputum suction pipe. Thus, the operation steps of an operator can be simplified.

Description

Technical Field

[0001] This invention relates to the field of suction devices, and more specifically to an automatic suction device. Background Technology

[0002] See Figure 1 An existing suction device 11 is used by a user to penetrate a patient's tracheostomy channel to supply oxygen and suction sputum from the patient. The suction device 11 has an outer tube 111, an oxygen supply tube 112 connected to the outer tube 111, and a suction tube 113 inserted into the outer tube 111.

[0003] The user first inserts the external tube 111 into the user's tracheostomy channel, then provides oxygen through the oxygen supply tube 112, and then inserts the suction tube 113 through the external tube 111 into the user's tracheostomy channel to perform suctioning.

[0004] However, during the suctioning process, the user must continuously monitor the patient's blood oxygen index. If the blood oxygen index drops, it means that the patient is unable to inhale oxygen. In this case, the suction tube 113 must be immediately removed from the user's tracheostomy channel so that the oxygen supply tube 112 can provide oxygen to the user. Therefore, the user must spend a lot of energy monitoring the blood oxygen index and moving the suction tube 113 at the same time. It often requires a very experienced user to operate, so the user's operational skills are highly demanding. Summary of the Invention

[0005] The technical problem this invention aims to solve is that existing devices require users to expend considerable effort simultaneously monitoring blood oxygen levels and moving the suction tube, often requiring highly experienced users. Therefore, they demand a high level of operational skill from the user. This invention provides an automatic suction device comprising a main oxygen supply tube, a main suction tube, an oxygen supply module, a suction module, and a respiratory sensor. This allows the control unit to automatically suction sputum or automatically supply oxygen based on the user's breathing state (i.e., automatic suction when the user exhales; automatic oxygen supply when the user inhales), simplifying the operator's steps and overcoming the deficiencies caused by existing technologies.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solutions:

[0007] The present invention provides an automatic suction device for use in a user's respiratory tract. The automatic suction device includes a working tube unit, a gas regulation unit, and a control unit.

[0008] The working tube unit includes a main oxygen supply tube and a main suction tube passing through the breathing channel. The gas regulation unit includes an oxygen supply module for providing oxygen, a suction module for extracting gas, an oxygen supply connector connecting the oxygen supply module and the main oxygen supply tube, a suction connector connecting the suction module and the main suction tube, and a respiratory sensor for measuring the user's breathing status. The control unit is electrically connected to the oxygen supply module, the suction module, and the respiratory sensor. When the respiratory sensor measures that the user is in an inhalation state, the control unit can control the oxygen supply module to supply oxygen to the main oxygen supply tube, and when the user is in an exhalation state, the control unit can control the suction module to extract gas from the suction connector.

[0009] An automatic suction device for use in a user's airway, wherein the automatic suction device comprises:

[0010] A working tube unit includes a main oxygen supply tube and a main suction tube that pass through the respiratory passage;

[0011] A gas regulation unit includes an oxygen supply module for providing oxygen, an air extraction module for extracting gas, an oxygen supply connector connecting the oxygen supply module and the main oxygen supply tube, an air extraction connector connecting the air extraction module and the main suction tube, and a respiratory sensor for measuring the user's respiratory status; and

[0012] A control unit is electrically connected to the oxygen supply module, the air extraction module, and the breathing sensor. When the breathing sensor detects that the user is in an inhalation state, the control unit controls the oxygen supply module to supply oxygen to the main oxygen supply tube, and when the user is in an exhalation state, the control unit controls the air extraction module to extract air from the air extraction tube.

[0013] In the aforementioned automatic suction device, the breathing sensor is a pressure sensor. When the pressure measured by the breathing sensor is negative, the control unit determines that the user is in the inhalation state; when the measured pressure is positive, the control unit determines that the user is in the exhalation state.

[0014] The aforementioned automatic suction device includes a suction module comprising a suction machine for extracting gas and at least one filter connected between the suction machine and the suction pipe for collecting the user's sputum.

[0015] The aforementioned automatic suction device further includes a base, a drive unit, and a front adapter unit. The drive unit includes a first motor disposed on the base and electrically connected to the control unit, a moving platform that can be driven by the first motor to move back and forth in a front-to-back direction, and a second motor electrically connected to the control unit. The second motor has a motor body disposed on the moving platform and a hollow drive shaft that passes through the motor body in the front-to-back direction and can be driven by the motor body to rotate about an axis extending in the front-to-back direction. The hollow drive shaft has a guide hole that passes through the front and back. The front adapter unit includes a unit disposed in front of the second motor. The device includes a front fixing part and a front rotating part pivotally mounted on the front fixing part and connected to the front end of the hollow drive shaft. The front fixing part has a front external connection hole, one end of which is open to the front and the other end of which is connected to the oxygen supply pipe. The front rotating part has a front internal connection hole that is through the front and rear and communicates with the guide hole. The main oxygen supply pipe can be stretched and retracted under force and fitted on the front side of the front fixing part. The main suction tube is disposed in the main oxygen supply pipe and connected to the front side of the front rotating part to communicate with the front internal connection hole and can rotate with the front rotating part driven by the hollow drive shaft. The control unit can also control the first motor and the second motor to drive the main suction tube to move and rotate.

[0016] The aforementioned automatic suction device further includes a rear adapter unit. The rear adapter unit includes a rear fixing part disposed behind the second motor and a rear rotating part pivotally disposed on the front side of the rear fixing part and connected to the rear end of the hollow drive shaft. The rear fixing part has a rear external connection hole, one end of which extends to the rear side of the rear rotating part, and the other end of which is connected to the suction pipe. The rear rotating part has a rear internal connection hole that connects the guide hole and the rear external connection hole. The suction pipe is connected to the guide hole through the rear external connection hole and the rear internal connection hole.

[0017] The aforementioned automatic suction device further includes a drive unit comprising a lead screw screwed to the moving platform and capable of rotating in conjunction with the first motor to drive the moving platform to move, and a limit switch electrically connected to the first motor and capable of causing the first motor to stop in an emergency when the moving platform is sensed to be approaching.

[0018] The aforementioned automatic suction device further includes an emergency stop button electrically connected to the control unit;

[0019] The drive unit also includes a positioning sensor electrically connected to the control unit and disposed at the end of the main suction tube opposite to the front rotating part. When the positioning sensor detects an obstacle in front, the control unit controls the first motor and the second motor to stop operating.

[0020] In the aforementioned automatic suction device, the main suction tube has a plurality of perforations communicating with the front inner connection hole.

[0021] In the aforementioned automatic suction device, the gas regulating unit further includes a gas supply module connected to the oxygen supply pipe to provide gas.

[0022] In the aforementioned automatic suction device, the gas regulating unit further includes a one-way input pipe connected to the oxygen supply pipe.

[0023] The technical solution provided by the automatic sputum suction device of the present invention, as described above, has the following technical effects:

[0024] By incorporating the main oxygen supply tube, the main suction tube, the oxygen supply module, the suction module, and the respiratory sensor, the control unit can automatically suction sputum or automatically supply oxygen based on the user's breathing state (i.e., the invention automatically suctions sputum when the user exhales and automatically supplies oxygen when the user inhales), thereby simplifying the operator's steps. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the operation of an existing suction device;

[0026] Figure 2 This is a schematic diagram of an embodiment of the automatic suction device of the present invention, illustrating the state in which a main suction tube has not yet been inserted into a user's respiratory tract.

[0027] Figure 3 yes Figure 2 The magnified state;

[0028] Figure 4 This is a partial cross-sectional view of a main oxygen supply tube, a main suction tube, and a positioning sensor in this embodiment.

[0029] Figure 5 This is a schematic diagram of the use of this embodiment from another perspective, illustrating the state in which the main suction tube is inserted into the user's airway;

[0030] Figure 6 This is a usage state diagram of this embodiment, illustrating the state in which the main suction tube is inserted into the user's respiratory tract and oxygen is supplied by the main oxygen supply tube;

[0031] Figure 7 This is a usage state diagram of this embodiment, illustrating the state in which the main suction tube is inserted into the user's respiratory tract and suctioning is performed by the main suction tube.

[0032] Figure 8 An incomplete cross-sectional schematic diagram illustrating another embodiment of the main oxygen supply tube, the main suction tube, and the positioning sensor.

[0033] The reference numerals in the attached figures are as follows:

[0034] 2: Working tube unit; 21: Main oxygen supply tube; 22: Main suction tube; 3: Gas regulation unit; 31: Oxygen supply module; 32: Suction module; 321: Suction machine; 322: Filter; 33: Gas supply module; 34: Oxygen supply connector; 35: Suction connector; 36: Breathing sensor; 37: One-way input tube; 52: Moving platform; 53: Second motor; 531: Motor body; 532: Hollow drive shaft; 533: Guide hole; 6: Front adapter unit; 61: Front fixing part; 611: Front external connection hole; 62: Front rotating part; 621: Front internal connection hole; 7: Rear adapter unit; 71: Rear fixing part; 711: Rear external connection hole; 72: Rear rotating part; 721: Rear internal connection hole; X: Front-back direction; L: Axis. Detailed Implementation

[0035] In order to make the technical means, inventive features, objectives and effects of the invention easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to specific illustrations. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0036] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0038] Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0039] A preferred embodiment of the present invention provides an automatic suction device, the purpose of which is to enable the control unit to automatically suction sputum or automatically supply oxygen according to the user's breathing state by setting the main oxygen supply tube and the main suction tube, the oxygen supply module, the suction module and the respiratory sensor (that is, when the user exhales, the present invention automatically suctions sputum; when the user inhales, the present invention automatically supplies oxygen), thereby simplifying the operator's operation steps.

[0040] See Figure 2, 3 4. An automatic suction device of the present invention is applied to a user's airway (not shown). The automatic suction device includes a working tube unit 2, a gas regulating unit 3, a base 4, a drive unit 5, a front adapter unit 6, a rear adapter unit 7, and a control unit 8. In this embodiment, the airway is the user's tracheostomy channel, but in other embodiments, it can also be used for the user's mouth or nostrils, and is not limited thereto.

[0041] The working tube unit 2 includes a main oxygen supply tube 21 and a main suction tube 22 passing through the breathing channel. The main suction tube 22 has a plurality of perforations 221. In this embodiment, the main suction tube 22 is disposed inside the main oxygen supply tube 21, and the main oxygen supply tube 21 is in the form of a telescopic snake tube.

[0042] The gas regulation unit 3 includes an oxygen supply module 31 for providing oxygen, an air extraction module 32 for extracting gas, a gas supply module 33 for providing gas, an oxygen supply connector 34 connecting the oxygen supply module 31, the air supply module 33, and the main oxygen supply pipe 21, an air extraction connector 35 connecting the air extraction module 32 and the main suction pipe 22, a respiratory sensor 36 for measuring the user's respiratory status, and a one-way input pipe 37 connecting the oxygen supply connector 34. In this embodiment, the air supply module 33 continuously provides a gas pressure of 3~5 mmHg, and the one-way input pipe 37 is used for one-way addition of drug spray or water vapor. Since one-way input technology is a commonly used technology in this field, the principle will not be further explained.

[0043] In this embodiment, the breathing sensor 36 is a pressure sensor installed in the oxygen supply pipe 34. It detects the user's breathing changes by sensing the air pressure. However, it is not limited to this. The pressure sensor can be installed in any space connected to the oxygen supply pipe 34. In other embodiments, the breathing sensor 36 can also be a sensor that senses the expansion and contraction of the chest cavity to determine the user's breathing changes. Any method that can be used to measure the user's breathing changes can be applied to the technology of this invention.

[0044] The suction module 32 includes a suction pump 321 for extracting gas, and two filters 322 connected between the suction pump 321 and the suction pipe 35 for collecting the user's sputum. It should be noted that these filters 322 are existing sputum-filtering devices, and therefore will not be described further in this specification.

[0045] The base 4 is adjacent to the user.

[0046] The drive unit 5 includes a first motor 51 mounted on the base 4, a mobile platform 52 driven by the first motor 51 to move back and forth in a forward-reverse direction X, a second motor 53 mounted on the mobile platform 52, a lead screw 54 screwed to the mobile platform 52 and rotated by the first motor 51 to move the mobile platform 52, a limit switch 55 electrically connected to the first motor 51 and capable of stopping the first motor 51 in an emergency when the mobile platform 52 is detected approaching, an emergency stop button 56, and a positioning sensor 57 mounted on one end of the main suction tube 22. In this embodiment, the limit switch 55 can be adjusted in position as needed to limit the movement distance of the mobile platform 52 and ensure the safety of the user.

[0047] The second motor 53 has a motor body 531 disposed on the mobile platform 52, and a hollow drive shaft 532 that passes through the motor body 531 in the front-rear direction X and can be driven by the motor body 531 to rotate about an axis L extending in the front-rear direction X. The hollow drive shaft 532 has a guide hole 533 that extends through the front and rear. In this embodiment, the second motor 53 is a hollow motor.

[0048] The front adapter unit 6 includes a front fixing part 61 disposed in front of the second motor 53, and a front rotating part 62 pivotally mounted on the front fixing part 61 and connected to the front end of the hollow drive shaft 532. The front fixing part 61 has a front external connection hole 611, one end of which is open to the front, and the other end of which is connected to the oxygen supply pipe 34. The front rotating part 62 has a through-hole 533 that is connected to the guide hole. The main suction tube 22 has a perforation 221 and a front inner connection hole 621. The main oxygen supply tube 21 is retractably fitted onto the front side of the front fixing part 61 under force. The main suction tube 22 is disposed inside the main oxygen supply tube 21 and connected to the front side of the front rotating part 62 to communicate with the front inner connection hole 621. It can rotate with the front rotating part 62 driven by the hollow drive shaft 532. The positioning sensor 57 is disposed at the end of the main suction tube 22 opposite to the front rotating part 62.

[0049] The rear adapter unit 7 includes a rear fixing part 71 disposed behind the second motor 53, and a rear rotating part 72 pivotally disposed on the front side of the rear fixing part 71 and connected to the rear end of the hollow drive shaft 532. The rear fixing part 71 has a rear external connection hole 711, one end of which extends to the rear side of the rear rotating part 72, and the other end of which is connected to the air extraction pipe 35. The rear rotating part 72 has a rear internal connection hole 721 that connects the guide hole 533 and the rear external connection hole 711. The air extraction pipe 35 communicates with the guide hole 533 through the rear external connection hole 711 and the rear internal connection hole 721.

[0050] The control unit 8 is electrically connected to the suction module 32, the breathing sensor 36, the first motor 51, the second motor 53, the emergency stop button 56, and the positioning sensor 57. The control unit 8 can also control the first motor 51 and the second motor 53 to move and rotate the main suction tube 22. In this embodiment, when the emergency stop button 56 is triggered, the control unit 8 will control the first motor 51 and the second motor 53 to stop operating to ensure the user's safety. In this embodiment, the positioning sensor 57 is electrically connected to the control unit 8 via a circuit rotary connector, allowing the positioning sensor 57 to maintain electrical connection with the external control unit 8 even when rotated. Since this is a common circuit rotary connection technology and not the main technology of this invention, it will not be further described in this specification and drawings.

[0051] When the air pressure measured by the breathing sensor 36 is negative, the control unit 8 determines that the user is in an inhalation state. When the breathing sensor 36 detects that the user is in an inhalation state, the control unit 8 can control the oxygen supply module 31 to supply oxygen to the oxygen supply connector 34. When the air pressure measured by the breathing sensor 36 is positive, the control unit 8 determines that the user is in an exhalation state. When the breathing sensor 36 detects that the user is in an exhalation state, the control unit 8 can control the suction module 32 to suction air from the suction connector 35.

[0052] When the hollow drive shaft 532 of the second motor 53 is driven to rotate by the motor body 531, the front rotating part 62 and the rear rotating part 72 will be rotated in conjunction, thereby driving the main suction tube 22 to rotate. When the first motor 51 drives the lead screw 54 to rotate and drives the moving platform 52 to move, the main oxygen supply tube 21 will be extended and retracted in conjunction, and the main suction tube 22 will be moved in conjunction.

[0053] See Figure 2 , 4 5. When using, first insert the main oxygen supply tube 21 into the user's breathing channel (see...). Figure 2 At this point, the main suction tube 22 is located outside the airway. Then, the control unit 8 controls the operation of the first motor 51 and the second motor 52 to rotate the main suction tube 22 into the user's airway (see...). Figure 5At this time, the main oxygen supply tube 21 will be gradually compressed, but its internal passage will remain unobstructed. Since the main suction tube 22 is in a rotating state, the perforation 221 on the side will scrape the sputum when it passes through, making the sputum easier to absorb. When the control unit 8 detects an obstacle in front of the positioning sensor 57, that is, when the bronchus is detected, the control unit 8 controls the first motor 51 and the second motor 52 to stop operating. It should be noted that in this embodiment, the positioning sensor 57 is composed of three fiber tactile sensors (such as Von Frey Filaments), which detect the obstacle in front by touch.

[0054] See Figure 3 , 5 6. During this process, because the oxygen supply module 31 continuously supplies oxygen to the oxygen supply connector 34, and the air supply module 33 continuously provides air pressure, the user can inhale oxygen (see...). Figure 6 (Airflow arrow direction in the image).

[0055] See Figure 3 , 5 7. When it is determined that the user is in the exhalation state, the suction tube 35 will be suctioned, and the air pressure continuously provided by the air supply module 33 can keep the user's airway open and prevent it from collapsing. Therefore, the sputum will be suctioned up and collected in the filters 322 after passing through the perforation 221, the front inner connection hole 621, the guide hole 533, the rear inner connection hole 721, the rear outer connection hole 711 and the suction tube 35 in sequence.

[0056] Since the entire process is automated, the number of steps required from the operator can be greatly reduced, thus reducing the operator's technical needs.

[0057] It is worth mentioning that in other embodiments, the automatic suction device can also eliminate the drive unit 5, the front adapter unit 6, and the rear adapter unit 7, separate the main oxygen supply tube 21 and the main suction tube 22, and connect the main oxygen supply tube 21 and the main suction tube 22 to the oxygen supply connector 34 and the suction connector 35 respectively. The main oxygen supply tube 21 and the main suction tube 22 are inserted into the user's mouth or nostrils, and oxygen is continuously supplied through the oxygen supply module 31. The control unit 8 automatically judges the user's breathing status and can manually adjust the position of the main suction tube 22 to perform suction. Since the operator does not need to consider the user's blood oxygen concentration, it can also achieve the effect of reducing the operator's technical requirements.

[0058] Additionally, see Figure 8In other embodiments, the positioning sensor 57 can also be a resistance change, light or magnetic distance sensor, which can achieve the same effect by sensing whether there is an obstacle in front.

[0059] In summary, by setting up the main oxygen supply tube 21, the main suction tube 22, the oxygen supply module 31, the suction module 32, and the respiratory sensor 36, automatic oxygen supply and automatic suctioning of sputum by the control unit 8 according to the user's breathing state can be achieved, so that the user can inhale oxygen when inhaling and be automatically suctioned when exhaling, simplifying the operator's operation steps, thus effectively achieving the purpose of the present invention.

[0060] In summary, the automatic suction device of the present invention comprises a main oxygen supply tube and a main suction tube, an oxygen supply module, a suction module and a respiratory sensor, which enables the control unit to automatically suction sputum or automatically supply oxygen according to the user's breathing state (that is, when the user exhales, the present invention automatically suctions sputum; when the user inhales, the present invention automatically supplies oxygen), thereby simplifying the operator's operation steps.

[0061] The specific embodiments of the invention have been described above. It should be understood that the invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood to be implemented in a manner common to the art; those skilled in the art can make various modifications or alterations within the scope of the claims, and make several simple deductions, variations or substitutions, which do not affect the substantive content of the invention.

Claims

1. An automatic sputum suction device applied to a respiratory passage of a user, characterized in that, The automatic sputum suction device comprises: a working tube unit, including a main oxygen supply tube and a main sputum suction tube, which are arranged in the respiratory passage of the user; a gas regulating unit, including an oxygen supply module for providing oxygen, a gas suction module for sucking gas, a gas supply module for supplying gas, an oxygen supply connecting tube for connecting the oxygen supply module, the gas supply module and the main oxygen supply tube, a gas suction connecting tube for connecting the gas suction module and the main sputum suction tube, and a respiration sensor for measuring the respiration state of the user, which is a gas pressure sensor; a control unit electrically connected to the oxygen supply module, the gas suction module and the respiration sensor, which controls the oxygen supply module to supply oxygen to the main oxygen supply tube when the respiration sensor measures that the user is in an inhalation state, and controls the gas suction module to suck gas from the gas suction connecting tube when the respiration sensor measures that the user is in an exhalation state, wherein the user is determined to be in the inhalation state when the respiration sensor measures a negative pressure, and is determined to be in the exhalation state when the respiration sensor measures a positive pressure, in use, the control unit controls the first motor and the second motor to operate, so that the main sputum suction tube is rotated and inserted into the respiratory passage of the user, at this time, the main oxygen supply tube is gradually compressed, but the internal passage is still unobstructed, the main sputum suction tube is maintained in a rotating state, and the side perforations can scrape the sputum to facilitate the suction of the sputum, in this process, the oxygen supply module continuously supplies oxygen to the oxygen supply connecting tube, and the gas supply module continuously supplies a gas pressure of 3-5 mmHg, so that the user can inhale oxygen; when the user is determined to be in the exhalation state, the gas pressure of 3-5 mmHg continuously supplied by the gas supply module can keep the airway of the user unobstructed, and the gas suction module sucks in the gas suction connecting tube, so that the sputum is sucked and lifted by the main sputum suction tube. The gas suction module has a gas suction machine for sucking gas, and at least one filter connected between the gas suction machine and the gas suction connecting tube for collecting the sputum of the user.

2. An automatic sputum suction device according to claim 1, characterized in that ​ 3. An automatic sputum suction device as claimed in claim 1, characterized in that The device further comprises a base, a driving unit, and a front adapter unit. The driving unit includes a first motor disposed on the base and electrically connected to the control unit, a moving platform driven by the first motor to move back and forth in a front-back direction, and a second motor electrically connected to the control unit. The second motor has a motor body disposed on the moving platform, and a hollow drive shaft passing through the motor body in the front-back direction and driven by the motor body to rotate around an axis extending in the front-back direction. The hollow drive shaft has a front-back through guide hole. The front adapter unit includes a front fixed part disposed in front of the second motor, and a front rotating part pivotally disposed on the front fixed part and connected to the front end of the hollow drive shaft. The front fixed part has a front outer connecting hole, one end of which is open forward. The other end of the front outer connecting hole is connected to the oxygen supply connecting pipe. The front rotating part has a front inner connecting hole passing through the front-back direction and communicating with the guide hole. The main oxygen supply pipe is elastically sleeved on the front side of the front fixed part. The main sputum suction pipe is disposed in the main oxygen supply pipe and connected to the front side of the front rotating part to communicate with the front inner connecting hole and rotate with the front rotating part driven by the hollow drive shaft. The control unit can control the first motor and the second motor to drive the main sputum suction pipe to move and rotate.

4. An automatic sputum suction device as claimed in claim 3, characterized in that The device further comprises a rear adapter unit. The rear adapter unit includes a rear fixed part disposed behind the second motor, and a rear rotating part pivotally disposed on the front side of the rear fixed part and connected to the rear end of the hollow drive shaft. The rear fixed part has a rear outer connecting hole, one end of which extends to the rear side of the rear rotating part. The other end of the rear outer connecting hole is connected to the air suction connecting pipe. The rear rotating part has a rear inner connecting hole communicating with the guide hole and the rear outer connecting hole. The air suction connecting pipe communicates with the guide hole through the rear outer connecting hole and the rear inner connecting hole.

5. An automatic sputum suction device as claimed in claim 3, characterized in that The driving unit further comprises a lead screw screwed on the moving platform and rotatable by the first motor to drive the moving platform to move, and a limit switch electrically connected to the first motor and capable of making the first motor stop urgently when the moving platform is sensed to be close.

6. An automatic sputum suction device as claimed in claim 3, characterized in that The driving unit further comprises an emergency stop button electrically connected to the control unit. The driving unit further comprises a position sensor electrically connected to the control unit and disposed on the main sputum suction pipe opposite to the front rotating part. The control unit controls the first motor and the second motor to stop operating when the position sensor senses an obstacle in front.

7. An automatic sputum suction device as claimed in claim 3, characterized in that The main sputum suction pipe has a plurality of perforations communicating with the front inner connecting hole.

8. An automatic sputum suction device as claimed in claim 1, characterized in that The gas regulating unit further comprises a one-way input pipe communicating with the oxygen supply connecting pipe.

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