Suction tube

Abstract

The present application discloses a sputum suction tube, comprising a flexible tube body, in which a suction tube cavity and a flushing tube cavity are arranged, and the flexible tube body comprises a first tube segment and a second tube segment; an anti-overflow tube, which is arranged at the end of the first tube segment, and an anti-overflow cavity is arranged in the anti-overflow tube, and the anti-overflow cavity communicates with the suction tube cavity and the flushing tube cavity; a plurality of stimulators, which are arranged on the outer tube wall of at least one of the first tube segment or the anti-overflow tube, and the stimulator has a stimulating part, which protrudes outward relative to the outer tube wall of the first tube segment or the anti-overflow tube, and the stimulating part can stimulate the inner wall of the respiratory tract. The sputum suction tube of this embodiment is provided with an anti-overflow tube, and during the sputum suction process, the flushing liquid is limited in the anti-overflow cavity, and the flushing liquid plays the role of internal flushing, effectively preventing the flushing liquid from overflowing into the respiratory tract; the sputum suction tube is also provided with a stimulator, which can induce the patient to cough, prompting the patient to discharge the sputum in the deep respiratory tract to the shallow respiratory tract, which is beneficial for the sputum suction tube to remove the sputum in the deep respiratory tract, and enhance the sputum suction effect of the sputum suction tube.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to a sputum suction tube. Background Art

[0002] The suction tube mainly uses the principle of negative pressure to suck out the sputum inside the patient's respiratory tract, preventing a large amount of sputum from accumulating in the patient's respiratory tract, causing breathing difficulties, respiratory system infections, etc. Some existing suction tubes are equipped with flushing tubes, which can achieve a certain function of flushing and unblocking the suction tube, preventing thick sputum from blocking the suction tube, and ensuring smooth suction.

[0003] However, the existing suction tube has the following problems: first, the suction tube is inserted blindly when it is inserted into the respiratory tract. Sometimes the end of the suction tube can be inserted into the lower respiratory tract, but sometimes it fails to enter the lower respiratory tract and stays in the throat, and sputum easily blocks the tube. The above factors determine that one suction operation requires multiple suction tube insertion operations; second, the flushing fluid is directly injected into the respiratory tract through the suction tube, and the flushing fluid overflows everywhere, making the flushing effect of the suction tube uncertain. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a sputum suction tube, which can dilute sputum in the anti-overflow tube to reduce the situation where the flushing fluid enters the lungs, and can also encourage the patient to cough to discharge sputum and flushing fluid deep in the lung bronchi into the main trachea, which is convenient for being sucked out by the sputum suction tube, thereby enhancing the cleaning effect of the sputum suction tube.

[0005] A sputum suction tube according to an embodiment of the first aspect of the present invention comprises: a flexible tube body, in which a suction tube cavity and a flushing tube cavity are arranged, the flexible tube body comprises a first tube section for delivery into the respiratory tract and a second tube section located outside the body, the second tube section is provided with a negative pressure joint connected to the suction tube cavity, and the second tube section is provided with an injection port connected to the flushing tube cavity; an anti-overflow tube, arranged at the end of the first tube section, the anti-overflow tube is provided with an anti-overflow cavity, the anti-overflow cavity is connected to the suction tube cavity and the flushing tube cavity, and the anti-overflow tube is provided with an opening; a plurality of stimulators, the stimulators are arranged on the outer tube wall of at least one of the first tube section or the anti-overflow tube, the stimulators have a stimulation part, the stimulation part protrudes outward relative to the outer tube wall of the first tube section or the anti-overflow tube, and the stimulation part can stimulate the inner wall of the respiratory tract.

[0006] The sputum suction tube according to the first embodiment of the present invention has at least the following beneficial effects:

[0007] 1. The sputum suction tube of this embodiment is provided with an anti-overflow tube and an anti-overflow cavity. The suction cavity and the flushing cavity are connected to the anti-overflow cavity, and the flushing liquid reaches the anti-overflow cavity first; 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 suction cavity by the negative pressure, and the flushing liquid is confined in the anti-overflow cavity and the suction cavity to dilute the sputum and flush the unobstructed cavity. The flushing liquid plays the role of internal flushing, which can effectively prevent the flushing liquid from overflowing into the respiratory tract, avoid excessive choking and respiratory spasm caused by excessive overflow of flushing liquid, and make the flushing of the sputum suction tube accurate, improve the effect and efficiency of sputum suction, improve the comfort of patients, reduce stimulation to patients, and reduce the risk of aggravating hypoxia in patients;

[0008] 2. The sputum suction tube of this embodiment is provided with a plurality of stimulators outside the first tube section and / or the anti-overflow tube. During the sputum suction process, the flexible tube body is rotated or pulled to stimulate the patient's respiratory tract through the stimulator, which can induce the patient to cough. Coughing can prompt the patient to expel sputum deep in the respiratory tract to the shallow part of the respiratory tract, which is beneficial to the removal of sputum deep in the respiratory tract, thereby enhancing the sputum suction effect of the sputum suction tube.

[0009] According to the sputum suction tube described in the first aspect of the present invention, the anti-overflow tube and the flexible tube body are integrally formed.

[0010] According to the sputum suction tube described in the first aspect of the present invention, the anti-overflow tube is an independent component, and the anti-overflow tube is sleeved on the end of the first tube section.

[0011] According to the sputum suction tube described in the first aspect of the present invention, a side hole is formed at least one of the end of the first tube section or the anti-overflow tube.

[0012] According to the sputum suction tube described in the first aspect of the present invention, the stimulator includes at least one first stimulator, and the first stimulator is arranged on the outer tube wall of the overflow prevention tube.

[0013] According to the sputum suction tube described in the first aspect of the present invention, the stimulator includes at least one second stimulator, the second stimulator is arranged on the outer tube wall of the first tube segment, and the distance between the second stimulator and the anti-overflow tube is in the range of 0-30 cm.

[0014] According to the sputum suction tube described in the first aspect of the present invention, the stimulator is integrally formed and arranged on the first tube segment or the anti-overflow tube.

[0015] According to the sputum suction tube described in the first aspect of the present invention, the stimulator includes a kit, and the stimulator is sleeved on the first tube section or the anti-overflow tube through the kit.

[0016] According to the sputum suction tube described in the first aspect of the present invention, the kit is a complete annular structure, or the kit is a part of an annular structure.

[0017] According to the sputum suction tube described in the first aspect of the present invention, the stimulation part is at least one of a hair-like object, a convex point, a sheet-like external convex block, a columnar external convex block, and a conical external convex block.

[0018] According to the sputum suction tube described in the first aspect of the present invention, the second tube section of the flexible tube body is provided with a vent hole, and the vent hole is connected to the suction tube cavity.

[0019] According to the sputum suction tube described in the first aspect of the present invention, a first plug cover is provided on the vent hole.

[0020] According to the sputum suction tube described in the first aspect of the present invention, scales are provided on the outer tube wall of the flexible tube body.

[0021] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0023] Figure 1 It is a structural schematic diagram of a sputum suction tube provided in an embodiment of the present application;

[0024] Figure 2 It is a cross-sectional view of a sputum suction tube provided in an embodiment of the present application.

[0025] Figure numerals: flexible tube body 100; first tube section 101; second tube section 102; suction tube cavity 110; flushing tube cavity 120; overflow prevention tube 130; overflow prevention cavity 131; end hole 132; side hole 133; first stimulator 141; second stimulator 142; negative pressure connector 150; vent hole 160; flushing connector 170. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0027] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal connection between two elements, indirect connection, or an interactive relationship between two elements.

[0028] In the description of this application, it should be noted that the meaning of "several" is one or more, the meaning of "multiple" is more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first", "second", etc., it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] Existing suction tubes are used to remove sputum and secretions from the respiratory tract. Because the suction tube is inserted blindly into the respiratory tract, the end of the suction tube can sometimes be inserted into the lower respiratory tract, and sometimes it fails to enter the lower respiratory tract and stays in the throat; even if the suction tube reaches the lower respiratory tract, it is difficult for the suction tube to reach the deep respiratory tract due to the small diameter of the deep respiratory tract, and it is difficult to remove the sputum in the deep respiratory tract. And when the sputum is too thick, it is easy to block the tube, and the thick sputum needs to be diluted with flushing fluid. The above factors determine that one suction operation requires multiple suction tube insertion operations, which is easy to damage the respiratory tract and difficult to remove the sputum deep in the respiratory tract; and when flushing with flushing fluid, the flushing fluid is directly injected into the respiratory tract through the suction tube, and the flushing fluid overflows everywhere, making the flushing effect of the suction tube uncertain, and the flushing fluid cannot be completely sucked away, resulting in part of the flushing fluid being retained in the respiratory tract. Too much flushing fluid retained in the respiratory tract may cause excessive choking and coughing in patients, or even respiratory tract spasms, which may aggravate the patient's hypoxia and cause discomfort to the patient. If too much sputum and flushing fluid accumulate deep in the respiratory tract and cannot be removed or sucked out in time, it can easily block the respiratory tract, causing lung infection or prolonged lung infection, and even lead to hypoxia and suffocation of the patient.

[0030] In response to the above problems, the present application provides a sputum suction tube.

[0031] Reference Figure 1 and Figure 2The sputum suction tube includes a flexible tube body 100, in which a suction lumen 110 and a flushing lumen 120 are arranged. The flexible tube body 100 includes a first tube section 101 for delivery into the respiratory tract and a second tube section 102 located outside the body close to the operator. A negative pressure joint 150 connected to the suction lumen 110 is arranged on the second tube section 102, and the negative pressure joint 150 is used to connect with a suction device, and a negative pressure is generated by the suction device to suck out sputum. An injection port connected to the flushing lumen 120 is also arranged on the second tube section 102, and a flushing joint 170 is arranged on the injection port. The flushing joint 170 is connected to an external pipeline and is used to inject flushing liquid into the flushing lumen 120. An anti-overflow tube 130 is arranged at the end of the first tube section 101, and an anti-overflow cavity 131 is arranged in the anti-overflow tube 130, and the suction lumen 110 and the flushing lumen 120 are respectively connected to the anti-overflow cavity 131. At least one opening is arranged on the anti-overflow tube 130. The sputum suction tube of the present embodiment is provided with an anti-overflow tube 130 and an anti-overflow cavity 131. The suction cavity 110 and the flushing cavity 120 are both connected to the anti-overflow cavity 131, and the flushing liquid reaches the anti-overflow cavity 131 first. During the sputum suction process, when the negative pressure of suction is large enough, the negative pressure is used to suck the sputum in the respiratory tract into the anti-overflow cavity 131 and the suction cavity 110, and at the same time, the flushing liquid is confined in the anti-overflow cavity 131 and the suction cavity 110 to dilute the sputum and flush the unobstructed cavity. The flushing liquid plays the role of internal flushing, which can effectively prevent the flushing liquid from overflowing into the respiratory tract, avoid excessive choking and respiratory tract spasm caused by excessive overflow of flushing liquid, and make the flushing of the sputum suction tube accurate, improve the effect and efficiency of sputum suction, improve the patient's comfort, reduce the stimulation to the patient, and reduce the risk of aggravating the patient's hypoxia.

[0032] In addition, the sputum suction tube of the present application is provided with a stimulator on the outer tube wall of at least one of the first tube section 101 or the anti-overflow tube 130, and the stimulator has a stimulating part, which protrudes outward relative to the outer tube wall of the first tube section 101 or the anti-overflow tube 130, and the stimulating part can stimulate the inner wall of the respiratory tract. When the above-mentioned sputum suction tube is used, the flexible tube body 100 can be rotated or pulled out during sputum suction, and the stimulator provided on the outer tube wall of the first tube section 101 or the anti-overflow tube 130 can stimulate the patient's respiratory tract and induce the patient to cough. Coughing can prompt the patient to discharge sputum in the deep part of the respiratory tract to the shallow part of the respiratory tract, which is beneficial for the sputum suction tube to suck out the sputum in the deep part of the respiratory tract. One insertion and suction operation can suck out more sputum, and it is easier to suck out sputum in the deep part of the respiratory tract, thereby enhancing the sputum suction effect and efficiency of the sputum suction tube, reducing the number of insertion operations of the sputum suction tube and improving comfort.

[0033] It should be noted that the wall of the flushing lumen 120 can be entirely disposed inside the suction lumen 110, such as Figure 1As shown; or the wall of the flushing lumen 120 is partially embedded in the wall of the suction lumen 110; or the wall of the flushing lumen 120 can be completely arranged outside the suction lumen 110, and the wall of the flushing lumen 120 and the wall of the suction lumen 110 are arranged side by side, and the two together constitute the flexible tube body 100. The embodiment of the present application does not specifically limit the specific arrangement between the flushing lumen 120 and the suction lumen 110, and those skilled in the art can arrange it according to actual needs, which will not be repeated here.

[0034] It should be noted that the overflow prevention tube 130 and the first tube section 101 of the flexible tube body 100 may be integrally formed once, twice, or multiple times. Figure 1 As shown, the overflow prevention tube 130 and the flexible tube body 100 are integrally formed, which can reduce accessories and facilitate use. In addition, the overflow prevention tube 130 and the flexible tube body 100 can also be secondary molded on the flexible tube body 100; or the overflow prevention tube 130 can be an independent part, which is connected to the end of the first tube section 101. The embodiment of the present application does not specifically limit the specific connection method between the overflow prevention tube 130 and the flexible tube body 100. Those skilled in the art can set it according to actual needs, which will not be repeated here.

[0035] It should be noted that the number of stimulators can be one or more. The present application does not specifically limit the number of stimulators, and those skilled in the art can set it according to actual needs.

[0036] It should be noted that the stimulator can be located at any position of the first pipe section 101 and the anti-overflow pipe 130, and those skilled in the art can set the position of the stimulator according to actual needs.

[0037] It should be noted that the stimulator can be a structure that is molded as an integral unit with the suction tube once, twice, or multiple times. The stimulator can also be assembled to the flexible tube body 100 as an accessory and then fixedly connected or movably connected to the flexible tube body 100. The embodiments of the present application do not make specific limitations on this, and those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0038] It should be noted that the stimulation part can be one or more of hair-like objects, bumps, sheet-like external protrusions, columnar external protrusions, and conical external protrusions. The embodiments of the present application do not specifically limit this. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0039] The sputum suction tube of the present application is further described below in conjunction with the accompanying drawings.

[0040] Reference Figure 1 and Figure 2, a preferred embodiment provided by the present application. A sputum suction tube includes a flexible tube body 100, in which a suction lumen 110 and a flushing lumen 120 are arranged, and the flexible tube body 100 includes a first tube section 101 for delivery into the respiratory tract and a second tube section 102 located outside the body close to the operator. A negative pressure joint 150 connected to the suction lumen 110 is arranged on the second tube section 102. An injection port connected to the flushing lumen 120 is also arranged on the second tube section 102, and a flushing joint 170 is arranged on the injection port. An anti-overflow tube 130 is arranged at the end of the first tube section 101, and an anti-overflow cavity 131 is arranged in the anti-overflow tube 130, and the suction lumen 110 and the flushing lumen 120 are respectively connected to the anti-overflow cavity 131. At least one opening is arranged on the anti-overflow tube 130, and the opening includes an end hole 132 opened at the end of the anti-overflow tube 130, and a side hole 133 opened on the side wall of the anti-overflow tube 130. A stimulator is arranged on the outer tube wall of at least one of the first tube section 101 or the anti-overflow tube 130, and the stimulator has a stimulating part, which protrudes outward relative to the outer tube wall of the first tube section 101 or the anti-overflow tube 130, and the stimulating part can stimulate the inner wall of the respiratory tract. The sputum suction tube of this embodiment is provided with an anti-overflow tube 130. During the suction process, when the negative pressure in the suction tube cavity 110 is large enough, the flushing liquid can be confined in the anti-overflow cavity 131 to dilute the sputum and flush the unobstructed tube cavity. The flushing liquid plays the role of internal flushing, which can effectively prevent the flushing liquid from overflowing into the respiratory tract; at the same time, the sputum suction tube of this embodiment is also provided with a stimulator, which can controllably induce the patient to cough, prompting the patient to discharge the sputum in the deep respiratory tract to the shallow respiratory tract, which is beneficial for the sputum suction tube to remove the sputum in the deep respiratory tract, so as to enhance the sputum suction effect of the sputum suction tube.

[0041] In some embodiments of the present application, reference Figure 1 The overflow prevention tube 130 can be integrally formed and arranged at the end of the first pipe section 101. Through the integral forming, the connection of the overflow prevention tube 130 is more stable and reliable, and the number of accessories and the assembly process can be reduced.

[0042] In some embodiments of the present application, the anti-overflow tube 130 can also be connected as a sleeve to the end of the first pipe section 101. After the anti-overflow tube 130 is sleeved on the end of the first pipe section 101, it is fixed by a buckle structure, adhesion, etc. The anti-overflow tube 130 is used as an independent part to simplify the structure and facilitate mass production. It can also be designed to match the existing sputum suction tube to increase its scope of application.

[0043] In some embodiments of the present application, reference Figure 2The side wall of the overflow prevention tube 130 is provided with a side hole 133. Through the side hole 133 provided on the side wall of the overflow prevention tube 130, the sputum on the side wall of the respiratory tract can be conveniently sucked into the overflow prevention cavity 131, thereby strengthening the suction effect of the sputum suction tube on the sputum on the respiratory tract wall and improving the effect and efficiency of sputum suction. Furthermore, during the sputum suction process, the sputum suction tube can be rotated within a certain range to drive the side hole 133 to rotate, so that the side hole 133 can suction a circle of the inner wall of the respiratory tract. The number of side holes 133 can be one or more. The embodiment of the present application does not specifically limit the number of side holes 133. Those skilled in the art can set them according to actual needs, which will not be repeated here.

[0044] In some embodiments of the present application, a side hole may be provided at one end of the first tube segment 101 close to the anti-overflow tube 130 , and sputum on the side wall of the respiratory tract may be directly sucked into the suction tube cavity 110 through the side hole provided on the side wall of the first tube segment 101 .

[0045] In some embodiments of the present application, reference Figure 1 Multiple stimulators can be provided, and the multiple stimulators can be arranged separately to physically stimulate different positions of the respiratory tract, thereby strengthening the effect of the stimulation and more easily inducing coughing in patients.

[0046] In some embodiments of the present application, reference Figure 1 and Figure 2 The stimulator includes at least one first stimulator 141, and the first stimulator 141 is arranged on the outer tube wall of the anti-overflow tube 130. The anti-overflow tube 130 is located at the end of the first tube segment 101, that is, the first stimulator 141 is arranged at the front end of the suction tube extending into the respiratory tract. When the first tube segment 101 is inserted into the lower respiratory tract through the glottis, the first stimulator 141 can stimulate the deep and middle parts of the respiratory tract, thereby inducing the patient to cough. Because the suction insertion operation is mostly blind insertion, the blind insertion causes the suction tube to sometimes fail to pass through the glottis to reach the lower respiratory tract. When the first tube segment 101 cannot be inserted into the lower respiratory tract and is retained in the throat, the first stimulator 141 can stimulate the shallow part of the respiratory tract and the throat, which can still induce the patient to cough. Coughing can discharge sputum from the lower respiratory tract to the upper respiratory tract, which is conducive to suctioning sputum in the respiratory tract.

[0047] In some embodiments of the present application, reference Figure 1 and Figure 2 The stimulator further includes at least one second stimulator 142, which is arranged on the outer tube wall of the first tube section 101, and the distance between the second stimulator 142 and the anti-overflow tube 130 is within the range of 0-30 cm. When the first tube section 101 is inserted into the lower respiratory tract through the glottis, the second stimulator 142 can still stimulate the shallow part of the respiratory tract and the throat. Since the shallow part of the respiratory tract and the throat are more sensitive to physical stimulation, the patient may easily cough after being stimulated.

[0048] In some embodiments of the present application, reference Figure 1 The stimulator can be integrally formed on the outer tube wall of the first tube section 101. Through integral molding, the fixation of the stimulator is more reliable, and the number of accessories and assembly processes can be reduced.

[0049] In some embodiments of the present application, the stimulator can also be assembled to the flexible tube body 100 as an accessory. The stimulator includes a kit, which can be a complete annular structure, or the kit can also be a part of the annular structure. The stimulator is fixedly connected or movably sleeved outside the first pipe section 101 through the kit. The stimulator and the flexible tube body 100 are produced independently and then assembled, which can simplify the structure of each accessory and make it easier to achieve industrial production. Further, when the stimulator is fixedly connected to the outer tube wall of the first pipe section 101 or the anti-overflow tube 130 through the kit, the kit and the outer tube wall can be an interference fit, or the kit can be fixed to the outer tube wall by an adhesive. When the stimulator is movably sleeved outside the first pipe section 101 through the kit, the outer tube wall of the first pipe section 101 can be provided with a limiting structure, and the limiting structure limits the position of the sliding of the kit to avoid slipping off the flexible tube body 100.

[0050] In some embodiments of the present application, the stimulation portion is one or more of a hair-like object, a convex point, a sheet-like outer convex block, a columnar outer convex block, and a conical outer convex block, and the movement and rotation of the stimulation portion produce physical stimulation to the respiratory tract, so as to induce the patient to cough. The stimulation portion is preferably made of a flexible material, such as a sheet-like outer convex block made of a soft hair-like object or a flexible material, which can be deformed in the respiratory tract, so as to facilitate the insertion of a suction tube into the respiratory tract, and to facilitate the stimulator to pass through the narrowed parts of the respiratory tract such as the glottis, so as to reduce the damage of the stimulator to the respiratory tract as far as possible, and to improve the safety of the suction tube. The stimulation portion can also be a low-height harder protrusion, such as a convex point, so that the stimulator can still pass through the glottis smoothly, and can still produce mechanical stimulation to the respiratory tract wall, so as to induce cough. Further, the stimulation portion of the hair-like object can form a structure similar to a brush, and the stimulation portion of the sheet-like outer convex block can form a structure similar to a scraper, so that in the suction process of the suction tube, the sputum with higher viscosity on the respiratory tract wall can also be taken out, and the cleaning effect of the suction tube can be further enhanced.

[0051] In some embodiments of the present application, reference Figure 2, the side wall of the second tube section 102 is provided with a vent 160, and the vent 160 is connected to the suction lumen 110. Through the vent 160, the negative pressure in the suction lumen 110 can be controlled, and the suction negative pressure can be adjusted, which is beneficial to the insertion operation of the flexible tube body 100 and reduces the loss of the suction operation to the respiratory tract. When the vent 160 is closed, the negative pressure in the lumen of the flexible tube body 100 is relatively large, and the negative pressure acts on the first tube section 101 and the anti-overflow tube 130, and the suction tube can remove sputum. When the vent 160 is opened, the negative pressure acts on the vent 160, and the pressure at the first tube section 101 and the anti-overflow tube 130 is relatively small, and the sputum cannot be removed. In this way, the controllability of the suction tube can be improved, making the suction operation more convenient and safe.

[0052] In some embodiments of the present application, a plug cover is provided on the vent hole 160. By providing the plug cover on the vent hole 160, the vent hole 160 can be conveniently maintained in an open or closed state, thereby controlling the state of sputum suction. In this way, the controllability of the sputum suction tube can be further improved, making sputum suction more convenient.

[0053] In some embodiments of the present application, a scale is provided on the flexible tube body 100, and the starting point of the scale may be the end of the anti-overflow tube 130, or may not be the end of the anti-overflow tube 130. By setting the scale on the flexible tube body 100, the insertion length of the suction tube can be clearly known to control the depth of the suction tube entering the human body, improve the safety of the suction tube, and calculate the distance moved by the flexible tube body during the suction operation.

[0054] It should also be understood that the various implementations provided in the embodiments of the present application can be combined arbitrarily to achieve different technical effects.

[0055] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the field can also make various equivalent modifications or substitutions under the shared conditions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A sputum suction tube, characterized in that: include: A flexible tube body, wherein a suction lumen and a flushing lumen are arranged in the flexible tube body, wherein the flexible tube body comprises a first tube section for delivery into the respiratory tract and a second tube section located outside the body, wherein the second tube section is provided with a negative pressure joint connected to the suction lumen, and the second tube section is provided with an injection port connected to the flushing lumen; an anti-overflow tube, arranged at the end of the first tube section, wherein an anti-overflow cavity is arranged in the anti-overflow tube, wherein the anti-overflow cavity is connected to the suction tube cavity and the flushing tube cavity, and an opening is arranged on the anti-overflow tube; during the sputum suction process, the sputum in the respiratory tract is sucked into the anti-overflow cavity and the suction tube cavity by using negative pressure, and the flushing liquid is confined in the anti-overflow cavity and the suction tube cavity; A plurality of stimulators, each of which is arranged on the outer tube wall of at least one of the first tube segment or the anti-overflow tube, and each of which has a stimulation portion, and each of which protrudes outward relative to the outer tube wall of the first tube segment or the anti-overflow tube, and each of which can stimulate the inner wall of the respiratory tract, and each of which includes a kit, and each of which is sleeved on the first tube segment and the anti-overflow tube through the kit, and each of which is a complete annular structure, or a part of an annular structure, and each of which is a hair-like object or a protrusion.

2. The sputum suction tube according to claim 1, characterized in that: The anti-overflow tube and the flexible tube body are integrally formed.

3. The sputum suction tube according to claim 1, characterized in that: The anti-overflow pipe is an independent component, and the anti-overflow pipe is sleeved on the end of the first pipe section.

4. The sputum suction tube according to claim 1, characterized in that: A side hole is formed at the end of the first pipe section or at least one of the overflow prevention pipes.

5. The sputum suction tube according to claim 1, characterized in that: The stimulator includes at least one first stimulator, and the first stimulator is arranged on the outer tube wall of the overflow prevention tube.

6. The sputum suction tube according to claim 1 or 5, characterized in that: The stimulator includes at least one second stimulator, and the second stimulator is arranged on the outer tube wall of the first tube segment. The distance between the second stimulator and the anti-overflow tube is in the range of 0-30 cm.

7. The sputum suction tube according to claim 1, characterized in that: The stimulator is integrally formed and arranged on the first tube segment or the anti-overflow tube.

8. The sputum suction tube according to claim 1, characterized in that: The second tube section of the flexible tube body is provided with a vent hole, and the vent hole is connected to the suction lumen.

9. The sputum suction tube according to claim 8, characterized in that: The vent hole is provided with a first plug cover.

10. The sputum suction tube according to claim 1, characterized in that: The outer tube wall of the flexible tube body is provided with scales.

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