Sputum scab remover for pneumology department
By designing a respiratory sputum scab removal device that combines built-in and external tubes, the combination of the magnetic suction ring and the respiratory sputum scab collection stent is used to accurately remove sputum scabs at dead corners in the airway, solving the problem that traditional equipment is difficult to remove sputum scabs at dead corners, and significantly improving the removal effect and the stability of the equipment.
Patent Information
- Application Number
- CN202510193457.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-05-09
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The prior art is difficult to effectively remove sputum scabs in dead corners in the airway, resulting in airway obstruction and increasing the risk of infection. It is difficult for traditional sputum suction equipment to accurately control the strength and range of sputum suction, which can easily damage the airway mucosa.
A respiratory sputum scab removal device was designed, using a combined structure of built-in tube and external tube, and the combination of magnetic suction ring and respiratory sputum scab collection stent was used to achieve accurate removal of sputum and sputum scab. The device accurately controls the magnetic suction force through the combination of the electromagnet ring and the air flow sensor, protects the airway mucosa, and realizes automatic reset of the structure through the reset spring and torsion spring, simplifying operation.
It realizes the precise removal of sputum scabs at dead corners in the airway, significantly improves the removal effect of sputum scabs, protects the airway mucosa, is easy to operate, and has higher equipment stability and reliability.
Smart Images

Figure CN119950929A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of respiratory medical instruments, in particular to a respiratory sputum scab remover. Background Art
[0002] In the clinical treatment of respiratory medicine, patients often have lower respiratory tract secretions retained due to various reasons (such as craniocerebral trauma, chest and abdominal trauma, and poliomyelitis, etc.), which leads to the formation of sputum crusts. These sputum crusts usually accumulate in the bends or dead corners of the airway. Traditional suction equipment is difficult to effectively remove them, resulting in airway obstruction in patients, increasing the risk of infection, and seriously affecting the patient's recovery and treatment effect. At present, the commonly used method of sputum removal in clinical practice is mainly to insert a tracheal cannula through tracheotomy and use an external suction device to suction sputum. However, this method has the following problems: First, the repeated insertion and fixation process of the tracheal cannula is complicated, which can easily cause secondary damage to the patient; second, it is difficult for the external suction device to accurately control the suction force and range, which can easily damage the airway mucosa; third, for sputum crusts in the bends or dead corners of the airway, the suction effect is poor and it is easy to remain. Therefore, there is an urgent need for a device that can effectively remove sputum crusts in the airway to improve the treatment effect and quality of life of patients. Summary of the invention
[0003] The purpose of the present invention is to provide a respiratory sputum crust remover, which has the advantages of accurately removing sputum crust in dead corners, protecting airway mucosa, and easy operation, thereby solving the problem that it is difficult to effectively remove sputum crust in dead corners in the airway in the prior art.
[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a respiratory sputum scab remover, comprising an internal tube one placed in the patient's airway and an internal tube two fixed at the left end of the internal tube one and placed in the patient's airway, a positioning airbag ring filled with gas and in contact with the patient's airway surface is fixedly connected to the arc-shaped contour of the internal tube two, an external tube is fixedly connected to the right end of the internal tube one, and the external tube is externally connected to an expectorant body after passing through the patient's skin tissue, a sealing ring is fixedly connected to the arc-shaped contour of the external tube, and the sealing ring is fixed to the skin at the patient's neck, a magnetic ring one is slidably connected to the axis of the arc-shaped contour of the internal tube one, an end of the magnetic ring one away from the internal tube two is fixedly connected to a respiratory sputum scab collection bracket sleeved on the arc-shaped contour of the internal tube one, and an end of the respiratory sputum scab collection bracket away from the magnetic ring one is fixed to the outer contour of the internal tube one.
[0005] Preferably, the inner wall of the built-in tube one is axially limited and slidably connected with a magnetic ring two, the magnetic ring two is magnetically matched with the magnetic ring one, the top of the magnetic ring two is fixedly connected with a connecting sleeve, the top of the connecting sleeve is fixedly connected with a locking ring, the lower surface of the centripetal part of the locking ring is clamped with a rocker bar, the inner wall of the built-in tube one is axially slidably connected with a magnetic ring three, the inner wall of the magnetic ring three is provided with a groove, and the rocker bar is fixedly rotatably connected in the groove.
[0006] Preferably, the number of the rocker bars is two and they are symmetrically arranged, and torsion springs are provided on the surfaces of the two rocker bars, and one end of the torsion spring away from the rocker bar is fixedly connected to the inner wall of the groove.
[0007] Preferably, the inner wall of the built-in tube one near one end of the external tube is fixedly connected with an electromagnet ring that cooperates with the electromagnetic attraction of the magnetic attraction ring three, and the inner wall of the built-in tube two near one end of the built-in tube one is fixedly connected with a built-in air guide tube, and the end of the built-in air guide tube away from the built-in tube two is connected to the expectorant machine body after passing through the built-in tube one and the positioning airbag ring.
[0008] Preferably, an air flow sensor is provided in the built-in air guide tube, and a control system is also provided in the built-in tube, which is connected to the air flow sensor signal and controls the current intensity connected to the electromagnet ring.
[0009] Preferably, one end of the inner tube 2 close to the inner tube 1 is fixedly connected with a return spring 1, and one end of the return spring 1 away from the inner tube 2 is fixedly connected with a magnetic ring 2.
[0010] Preferably, a return spring 2 is fixedly connected between the magnetic ring 3 and the locking ring, and the strength of the return spring 2 is smaller than that of the return spring 1.
[0011] Preferably, a spiral groove is formed on the inner wall of the inner tube 1, and a protrusion matching the spiral groove is fixedly connected to the arc-shaped contour of the connecting sleeve.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. The present invention realizes the precise removal of sputum and sputum scabs by providing the cooperation between a magnetic suction ring and a respiratory tract sputum scab collection bracket. The respiratory tract sputum scab collection bracket can perform axial compression, axial extension and twisting actions on the outer contour of the built-in tube 1. Through these actions, sputum and sputum scabs can be effectively separated and collected from the inner wall of the airway. Compared with traditional sputum suction equipment, the present invention can better adapt to the bends and blind spots of the airway, avoiding the problem that traditional equipment is difficult to remove sputum scabs in these areas, and significantly improving the sputum scab removal effect.
[0014] 2. The present invention realizes precise control of the magnetic attraction of the electromagnet ring by providing an electromagnet ring and an airflow sensor. The airflow sensor monitors the airflow size in the patient's respiratory tract in real time and transmits the signal to the control system. The control system adjusts the current intensity of the electromagnet ring according to the airflow size, thereby precisely controlling the magnetic attraction. This precise control avoids damage to the airway mucosa caused by excessive suction and protects the patient's airway health. Compared with traditional sputum suction equipment, the present invention can better protect the airway mucosa and reduce the risk of airway damage caused by excessive suction force;
[0015] 3. The present invention realizes the automatic resetting function of the structure by providing a reset spring and a torsion spring. After the respiratory sputum scab collection bracket completes the clearing action, the reset spring and the torsion spring can automatically reset the relevant structure, simplifying the operation process. Compared with traditional equipment, the operation of the present invention is simpler and medical staff do not need to manually reset it, which saves operation time and improves the convenience of using the equipment. In addition, the structural design of the present invention is reasonable, and the coordination between the components is closer, which further improves the stability and reliability of the equipment;
[0016] 4. The present invention ensures the stability and sealing of the device in the patient's airway by providing a sealing ring and a positioning airbag ring. The sealing ring is fixed on the skin at the patient's neck, which can effectively prevent gas leakage and ensure the sealing between the external tube and the patient's airway. The positioning airbag ring is filled with gas and contacts the surface of the patient's airway, which can better adapt to the shape of the airway and ensure the stable positioning of the built-in tube one and the built-in tube two in the airway. Compared with traditional equipment, the present invention has better stability and sealing, can effectively avoid the influence of gas leakage on the cleaning effect, and ensure the smooth progress of the sputum scab removal process.
[0017] 5. The present invention realizes intelligent control by setting an air flow sensor and a control system. The air flow sensor monitors the airflow size in the patient's respiratory tract in real time and transmits the signal to the control system. The control system adjusts the current intensity of the electromagnet ring according to the airflow size, thereby accurately controlling the magnetic suction force. This intelligent control not only improves the performance of the equipment, but also can automatically adjust the suction force according to the specific situation of the patient, ensuring the cleaning effect while protecting the airway mucosa. Compared with traditional equipment, the present invention has a higher degree of intelligence and can better meet clinical needs. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A three-dimensional diagram of the overall device of the present invention;
[0019] Figure 2 For the present invention Figure 1 A cross-sectional view of the internal tube 1, the internal tube 2 and the external tube as a whole;
[0020] Figure 3It is a cross-sectional view of the location of the built-in airway tube of the present invention;
[0021] Figure 4 For the present invention Figure 1 A magnified view of the structure at C in the middle;
[0022] Figure 5 For the present invention Figure 1 A magnified view of the structure at D in the middle;
[0023] Figure 6 For the present invention Figure 1 A magnified view of the structure at E in the middle;
[0024] Figure 7 This is an enlarged view of the location of the respiratory tract sputum crust collection stent of the present invention.
[0025] In the figure: 1. built-in tube one; 2. built-in tube two; 3. positioning airbag ring; 4. external tube; 5. sealing ring; 6. magnetic ring one; 7. respiratory tract sputum crust collection bracket; 8. magnetic ring two; 9. connecting sleeve; 10. locking ring; 11. rocker; 12. magnetic ring three; 13. torsion spring; 14. electromagnet ring; 15. built-in airway tube; 16. reset spring one; 17. reset spring two. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0027] See also Figures 1 to 7 The present invention provides a technical solution: a respiratory sputum scab remover, comprising an internal tube 1 placed in the patient's airway and an internal tube 2 fixed at the left end of the internal tube 1 and placed in the patient's airway, a positioning airbag ring 3 filled with gas and in contact with the patient's airway surface is fixedly connected to the arc contour of the internal tube 2, an external tube 4 is fixedly connected to the right end of the internal tube 1, and the external tube 4 is externally connected to the expectorant body after passing through the patient's skin tissue, a sealing ring 5 is fixedly connected to the arc contour of the external tube 4, and the sealing ring 5 is fixed to the skin at the patient's neck, a magnetic ring 6 is slidably connected to the axis of the arc contour of the internal tube 1, an end of the magnetic ring 6 away from the internal tube 2 is fixedly connected to a respiratory sputum scab collection bracket 7 sleeved on the arc contour of the internal tube 1, and an end of the respiratory sputum scab collection bracket 7 away from the magnetic ring 6 is fixed to the outer contour of the internal tube 1.
[0028] refer to Figure 1When in use, the internal tube 2 and the internal tube 1 are placed in the patient's airway through the surgical incision, and the positioning of the internal tube 2 and the internal tube 1 in the patient's airway is completed by the positioning balloon ring 3, wherein the positioning balloon ring 3 does not completely block the patient's airway, and after the external tube 4 passes through the incision at the patient's airway, the sealing ring 5 completes the sealing of the incision, and then the medical tape completes the fitting and further sealing of the sealing ring 5 and the patient's skin;
[0029] Through the axial movement and rotation of the magnetic ring 6 on the internal tube 1, the respiratory tract sputum scab collection bracket 7 can be axially compressed, axially stretched and twisted on the outer contour of the internal tube 1;
[0030] The respiratory sputum scab collection stent 7 is made of the same material as the heart stent, and is an enlarged version in shape, which can adapt to the torsion and stretching operations in the patient's body.
[0031] In actual use, due to various reasons, such as craniocerebral trauma, chest and abdominal trauma, and poliomyelitis, the lower respiratory tract secretions are retained. In order to suction sputum and keep the airway open, tracheotomy can be considered. Through the tracheotomy tube, the anterior wall of the cervical trachea is cut and a tracheal tube is inserted to establish a new breathing passage.
[0032] In actual use, in order to adapt to the patient's airway, it will bend to a certain extent, and sputum is easily accumulated at the bend. When sputum is retained for a long time and the humidity of the respiratory tract is insufficient, sputum scab is very likely to form. The above-mentioned bend is a dead angle. For this reason, the relatively rough surface of the respiratory tract sputum scab collection bracket 7 can intercept and collect sputum scab and sputum before sputum scab is completely formed;
[0033] It should be noted that the accumulation of sputum is a gradual accumulation process, not produced at the same time, so the sputum scab must be accompanied by sputum, and the sputum scab does not exist alone;
[0034] Secondly, by extending and twisting the respiratory tract sputum scab collecting bracket 7, the trapped sputum can be further coated relatively evenly on the surface of the respiratory tract sputum scab collecting bracket 7 and more sputum can be further collected;
[0035] Further, the inner wall of the built-in tube 1 is axially limited and slidably connected with a magnetic ring 2 8, the magnetic ring 2 8 is magnetically matched with the magnetic ring 1 6, the top of the magnetic ring 2 8 is fixedly connected with a connecting sleeve 9, the top of the connecting sleeve 9 is fixedly connected with a locking ring 10, the lower surface of the centripetal part of the locking ring 10 is clamped with a rocker 11, the inner wall of the built-in tube 1 is axially slidably connected with a magnetic ring 3 12, the inner wall of the magnetic ring 3 12 is provided with a groove, and the rocker 11 is connected in the groove by fixed axis rotation;
[0036] refer to Figure 3 , through the magnetic attraction cooperation between the magnetic attraction ring 28 and the magnetic attraction ring 16, the magnetic attraction ring 28 can smoothly carry the magnetic attraction ring 16 to move axially or rotate on the built-in tube 1. Since the magnetic attraction ring 16 is fixedly connected to one end of the respiratory tract sputum scab collection bracket 7, the respiratory tract sputum scab collection bracket 7 can achieve the telescopic and torsional effect on the outer contour of the built-in tube 1, thereby achieving the interception and uniform coverage of sputum and sputum scabs, and thus achieving the cleaning of the sputum scabs at that location;
[0037] The sputum scab in this solution is the initial stage of sputum scab formation. At this time, the sputum scab is not a completely solid substance and is adhered to the sputum. With the contact and tension adhesion of the respiratory tract sputum scab collection bracket 7, the sputum and the sputum scab will be removed and collected together;
[0038] The connecting sleeve 9 and the locking ring 10 move synchronously in the built-in tube 1. The axial movement of the magnetic ring 3 12 in the built-in tube 1 causes the rocker 11 on the magnetic ring 3 12 to move synchronously. In addition, the end of the rocker 11 is engaged with the locking ring 10, so that
[0039] The rocker bar 11 can move with the locking ring 10 and the connecting sleeve 9 in the direction indicated by the arrow A;
[0040] Thus, the contraction of the respiratory tract sputum scab collecting bracket 7 is finally achieved;
[0041] Furthermore, the number of the rocker bars 11 is two and they are symmetrically arranged, and a torsion spring 13 is provided on the surface of the two rocker bars 11, and one end of the torsion spring 13 away from the rocker bar 11 is fixedly connected to the inner wall of the groove.
[0042] refer to Figure 3 By setting the two rocker bars 11, the contact between the rocker bars 11 and the locking ring 10 is more balanced and stable, and by setting the torsion spring 13, the rocker bars 11 are more stably locked when in contact with the locking ring 10, further realizing the smooth movement of the connecting sleeve 9 and the locking ring 10 in the direction indicated by the arrow A;
[0043] Furthermore, an electromagnet ring 14 that cooperates with the magnetic ring 3 12 for electromagnetic attraction is fixedly connected to the inner wall of the built-in tube 1 near one end of the external tube 4, and a built-in air guide tube 15 is fixedly connected to the inner wall of the built-in tube 2 near one end of the built-in tube 1. The end of the built-in air guide tube 15 that is away from the built-in tube 2 2 is connected to the sputum cough machine body after passing through the built-in tube 1 and the positioning airbag ring 3.
[0044] refer to Figure 3When the electromagnet ring 14 is connected to the circuit, it will generate magnetic attraction to the magnetic ring 3 12, so that the magnetic ring 3 12 will move toward the electromagnet ring 14, thereby realizing the movement of the magnetic ring 3 12, the rocker 11, the locking ring 10 and the connecting sleeve 9 in the direction of arrow A described in the above content;
[0045] By setting the built-in airway tube 15, the airflow in the patient's respiratory tract can be isolated from the structure in the built-in tube 1 to avoid mutual contamination. The built-in airway tube 15 is connected to the expectorant body in the external environment after passing through the external tube 4, so as to collect and process the sputum in the airway outside the blind spot of this scheme. The expectorant body in this scheme is Philips E70.
[0046] Furthermore, an air flow sensor is provided in the built-in air guide tube 15, and a control system is also provided in the built-in tube 1, which is connected to the air flow sensor signal and controls the current intensity connected to the electromagnet ring 14.
[0047] The air flow sensor in the built-in airway 15 is used to monitor the size of the airflow in the patient's respiratory tract in real time and is connected to the control system signal, wherein the control system includes:
[0048] Microcontroller MCU: used to process sensor signals and control the magnetic attraction strength of the electromagnet ring 14;
[0049] Analog-to-digital converter (ADC): The sensor outputs an analog signal, which needs to be converted into a digital signal by the ADC for processing by the microcontroller.
[0050] Electromagnet drive circuit: includes power amplifier and H-bridge circuit. The power amplifier is used to amplify the control signal output by the microcontroller to drive the electromagnet; the H-bridge circuit is used to control the current direction and intensity of the electromagnet to achieve precise magnetic attraction adjustment;
[0051] Power module: provides stable power supply for sensors, microcontrollers and electromagnets;
[0052] As well as connecting cables and interfaces.
[0053] Furthermore, a return spring 16 is fixedly connected to one end of the inner tube 2 close to the inner tube 1, and an end of the return spring 16 away from the inner tube 2 is fixedly connected to the magnetic ring 2 8.
[0054] refer to Figure 3, wherein the structure shape of the electromagnet ring 14 is an inverted cone. When the rocker 11 moves along the direction of arrow A to the outer contour of the electromagnet ring 14, the pressure degree of the respiratory tract sputum scab collection bracket 7 reaches the limit. As the rocker 11 contacts the electromagnet ring 14, the rocker 11 will be deflected by the elastic force of the torsion spring 13 on the customer's magnetic ring 3 12, so that the rocker 11 releases the locking contact with the locking ring 10. At this time, under the elastic force of the reset spring 16, the magnetic ring 2 8, the connecting sleeve 9, and the locking ring 10 will be quickly reset in the direction indicated by the arrow B. At this time, a slight vibration will be generated, which can remind the user through vibration that there is sputum scab in the respiratory tract and perform a clearing operation;
[0055] Furthermore, a return spring 2 17 is fixedly connected between the magnetic ring 3 12 and the locking ring 10, and the strength of the return spring 2 17 is smaller than that of the return spring 16. As can be seen from the foregoing content, the return spring 16 realizes the return movement of the magnetic ring 2 8 and other structures, that is, the movement in the direction of arrow B;
[0056] By setting the reset spring 2 17, the reset movement of the magnetic ring 3 12, the rocker 11 and the torsion spring 13 on the arrow B can be realized synchronously. Considering the friction resistance between the magnetic ring 3 12 and the inner wall of the built-in tube 1, the reset spring 2 17 is set to realize the reset movement of the rocker 11 and other structures;
[0057] At the same time, a rounded corner is provided on one end of the tilting rod 11 facing the magnetic ring 2 8. Through the design of the rounded corner, when passing through the locking ring 10, it can smoothly pass through the locking ring 10 and prepare in advance for the subsequent re-clearing operation;
[0058] Thereby, a smooth resetting action of the relevant structure is achieved.
[0059] Furthermore, a spiral groove is provided on the inner wall of the built-in tube 1, and a protrusion matching the spiral groove is fixedly connected to the arc-shaped contour of the connecting sleeve 9.
[0060] As the connecting sleeve 9 moves in the direction of arrow A and arrow B, relative sliding will occur between the soil block on the arc-shaped contour of the connecting sleeve 9 and the spiral groove, and under the guidance of the spiral groove, the connecting sleeve 9 will accurately rotate in the inner wall of the built-in tube 1, and through the transmission of the magnetic ring 8, the respiratory tract sputum scab collection bracket 7 can be twisted on the outer contour of the built-in tube 1, further achieving uniform coverage of sputum and sputum scab on the respiratory tract sputum scab collection bracket 7.
[0061] The structures placed in the patient's body in this solution have all been rounded and will not cause damage to the patient's respiratory skin.
[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A respiratory sputum scab remover, characterized in that: The invention comprises an internal tube (1) placed in the patient's airway and an internal tube (2) fixed at the left end of the internal tube (1) and placed in the patient's airway, wherein a positioning airbag ring (3) filled with gas and in contact with the patient's airway surface is fixedly connected to the arc-shaped contour of the internal tube (2), an external tube (4) is fixedly connected to the right end of the internal tube (1), and the external tube (4) is connected to the sputum machine body after passing through the patient's skin tissue, and the arc-shaped contour of the external tube (4) is fixedly connected to the positioning airbag ring (3) filled with gas and in contact with the patient's airway surface. A sealing ring (5) is connected, and the sealing ring (5) is fixed on the skin of the patient's neck. A magnetic ring (6) is slidably connected to the arc-shaped contour of the built-in tube (1) in an axis-limited manner. An end of the magnetic ring (6) away from the built-in tube (2) is fixedly connected to a respiratory sputum scab collection bracket (7) sleeved on the arc-shaped contour of the built-in tube (1). An end of the respiratory sputum scab collection bracket (7) away from the magnetic ring (6) is fixed on the outer contour of the built-in tube (1).
2. A respiratory sputum crust remover according to claim 1, characterized in that: The inner wall of the built-in tube one (1) is axially limited and slidably connected with a magnetic ring two (8), the magnetic ring two (8) is magnetically matched with the magnetic ring one (6), the top of the magnetic ring two (8) is fixedly connected with a connecting sleeve (9), the top of the connecting sleeve (9) is fixedly connected with a locking ring (10), the lower surface of the locking ring (10) at the centripetal position is clamped with a rocker (11), the inner wall of the built-in tube one (1) is axially slidably connected with a magnetic ring three (12), the inner wall of the magnetic ring three (12) is provided with a groove, and the rocker (11) is connected in the groove in a fixed axis rotation manner.
3. A respiratory sputum scab remover according to claim 2, characterized in that: The number of the rocker bars (11) is two and they are symmetrically arranged, and a torsion spring (13) is provided on the surface of the two rocker bars (11), and one end of the torsion spring (13) away from the rocker bars (11) is fixedly connected to the inner wall of the groove.
4. A respiratory sputum crust remover according to claim 3, characterized in that: An electromagnet ring (14) that cooperates with the magnetic attraction ring (12) for electromagnetic attraction is fixedly connected to the inner wall of the built-in tube (1) near one end of the external tube (4), and a built-in air guide tube (15) is fixedly connected to the inner wall of the built-in tube (2) near one end of the built-in tube (1). The end of the built-in air guide tube (15) that is away from the built-in tube (2) is connected to the expectorant body after passing through the built-in tube (1) and the positioning air bag ring (3).
5. A respiratory sputum crust remover according to claim 4, characterized in that: An air flow sensor is provided in the built-in air guide tube (15), and a control system is also provided in the built-in tube (1) which is connected to the air flow sensor signal and controls the current intensity connected to the electromagnet ring (14).
6. A respiratory sputum crust remover according to claim 5, characterized in that: One end of the inner tube 2 (2) close to the inner tube 1 (1) is fixedly connected to a return spring 1 (16), and one end of the return spring 1 (16) away from the inner tube 2 (2) is fixedly connected to the magnetic ring 2 (8).
7. A respiratory sputum crust remover according to claim 6, characterized in that: A return spring 2 (17) is fixedly connected between the magnetic ring 3 (12) and the locking ring (10), and the strength of the return spring 2 (17) is smaller than that of the return spring 1 (16).
8. The respiratory sputum crust remover according to claim 7, characterized in that: The inner wall of the inner tube (1) is provided with a spiral groove, and a protrusion matching the spiral groove is fixedly connected to the arc-shaped contour of the connecting sleeve (9).