Self-regulating chest drainage tube

Abstract

The present application relates to a kind of self-regulating chest drainage tube, comprising: drainage tube body, with drainage main passage;The drainage tube body includes multiple drainage sub-tube, multiple the drainage sub-tube is evenly arranged around the axis of the drainage tube body, each drainage sub-tube has drainage sub-passage;Drainage sub-tube includes expansion section, deformation section, drainage section arranged in order from distal end to proximal end, multiple the expansion section and multiple the deformation section are collectively surrounded to form expansion part;Multiple the drainage section surrounds the drainage main passage;In use, from the direction of the distal end to the direction of the proximal end, the cross-sectional area of the expansion part internal space gradually decreases until the cross-sectional area of the drainage main passage is same.By the cooperation of drainage main passage and multiple drainage sub-passage, the effusion in thoracic cavity is drained, and the drainage speed is accelerated.By the way of accelerating the drainage speed, the risk that blood forms blood clot and blocks drainage main passage or drainage sub-passage can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pleural effusion drainage devices, in particular to a self-adjusting pleural drainage tube. BACKGROUND

[0002] The pleural cavity is a potential space between the lung and the chest wall, and contains a small amount of fluid under normal circumstances to provide lubrication. Under the influence of various pathological factors, the balance between the production and absorption of fluid in the pleural cavity is broken, leading to abnormal accumulation of fluid, forming pleural effusion. Pleural effusion is a common clinical symptom, and its composition is complex, which may be transudate, exudate, or even contain blood or pus.

[0003] For pleural effusion, the conventional treatment method in clinical practice is to perform pleural catheterization and drainage. In the prior art, a pleural drainage tube is usually used as a drainage device. During the drainage operation, one end of the pleural drainage tube is inserted into the patient's pleural cavity, and the other end is connected to a water seal bottle, so that the pleural effusion in the pleural cavity is guided out of the body, so as to achieve the purpose of relieving the patient's symptoms and subsequent treatment.

[0004] However, in clinical practice, the composition of pleural effusion is often complex, for example, in the case of hemopneumothorax or empyema, the effusion not only contains blood, pus and other high-viscosity liquids, but also contains detached tissue mucosa, fibrin and other solid impurities. The drainage port of the existing pleural drainage tube is usually designed to be relatively small, and when draining such complex effusion, on the one hand, the drainage speed is slow, affecting the treatment efficiency. On the other hand, these viscous substances and impurities are also easy to accumulate at the narrow port, thereby causing the drainage tube to be blocked. SUMMARY

[0005] In order to solve or at least partially solve the above technical problems, the present application provides a self-adjusting pleural drainage tube.

[0006] The present application provides a self-adjusting pleural drainage tube, which comprises a drainage tube body having a main drainage channel; the drainage tube body comprises a plurality of drainage sub-tubes, the plurality of drainage sub-tubes are uniformly arranged around the axis of the drainage tube body, each drainage sub-tube has a sub-drainage channel; the drainage sub-tube comprises, from the distal end to the proximal end, an expansion section, a deformation section and a drainage section, the plurality of expansion sections and the plurality of deformation sections jointly form an expansion part; the plurality of drainage sections jointly form the main drainage channel; during use, from the direction of the distal end to the direction of the proximal end, the cross-sectional area of the internal space of the expansion part gradually decreases until it is the same as the cross-sectional area of the main drainage channel.

[0007] Optionally, the self-adjusting chest drainage tube further comprises a connecting film, which is arranged between two adjacent drainage sub-tubes and at the expansion part; in use, the connecting film in the unfolded state is used to block the gap between the two adjacent drainage sub-tubes.

[0008] Optionally, in one drainage sub-tube, the expansion section and the deformation section form an expansion sub-part; in use, the cross-sectional area of the expansion sub-part gradually decreases from the direction where the distal end is located to the direction where the proximal end is located until the cross-sectional area is the same as that of the drainage section.

[0009] Optionally, in any two adjacent drainage sub-tubes, one side of one drainage section has a first notch, and one side of the other drainage section has a second notch, the first notch and the second notch form a drainage hole; a plurality of drainage holes are sequentially and spaced apart from the direction where the distal end is located to the direction where the proximal end is located.

[0010] Optionally, the self-adjusting chest drainage tube further comprises a communication tube and a contraction capsule with a ring structure, the contraction capsule has a contraction capsule cavity; the contraction capsule is arranged in the drainage hole. The communication tube is arranged between two adjacent drainage sub-tubes; one end of the communication tube communicates with the contraction capsule cavity, and the other end of the communication tube is located at one end of the drainage tube body close to the proximal end.

[0011] Optionally, the self-adjusting chest drainage tube further comprises a communication tube and a contraction capsule, the contraction capsule has a first capsule cavity and a second capsule cavity, and the contraction capsule is arranged in the drainage hole; the communication tube is arranged between two adjacent drainage sub-tubes; one end of the communication tube communicates with the first capsule cavity and the second capsule cavity, and the other end of the communication tube is located at one end of the drainage tube body close to the proximal end; when the contraction capsule is inflated, the volume of the first capsule cavity is greater than that of the second capsule cavity, and the first capsule cavity expands in the direction where the second capsule is located.

[0012] Optionally, the self-adjusting chest drainage tube further comprises a hole sealing assembly arranged in the drainage hole, the hole sealing assembly is used to seal the drainage hole; the hole sealing assembly comprises a hole sealing piece and a first wire, the hole sealing piece is arranged in the drainage hole; one end of the first wire is located outside the drainage main channel; the other end of the first wire is arranged in the drainage main channel and connected with the hole sealing piece.

[0013] Optionally, each expansion section has a constraint hole at one end close to the distal end; the self-adjusting chest drainage tube further comprises a constraint wire, one end of the constraint wire is located outside the drainage main channel; the other end of the constraint wire is arranged in the expansion part through the drainage main channel and is re-arranged outside the drainage main channel after sequentially passing through a plurality of constraint holes.

[0014] The application also provides a self-adjusting chest drainage tube, which comprises a drainage tube body having a main drainage channel; the drainage tube body comprises a plurality of drainage sub-tubes which are uniformly arranged around the axis of the drainage tube body, each of the drainage sub-tubes has a sub-drainage channel, and the sub-drainage channel is sealed at one end close to the distal end; the drainage sub-tube comprises, from the distal end to the proximal end, an expansion section, a deformation section and a drainage section, and the plurality of expansion sections and the plurality of deformation sections jointly form an expansion part; the plurality of drainage sections jointly form the main drainage channel; in the use state, from the direction of the distal end to the direction of the proximal end, the cross-sectional area of the internal space of the expansion part gradually decreases until the cross-sectional area is the same as that of the main drainage channel.

[0015] Optionally, the self-adjusting chest drainage tube further comprises a connecting film arranged between two adjacent drainage sub-tubes and located at the expansion part; in the use state, the connecting film in the unfolded state is used to block the gap between the two adjacent drainage sub-tubes.

[0016] Optionally, in one drainage sub-tube, the expansion section and the deformation section form an expansion sub-part; in the use state, from the direction of the distal end to the direction of the proximal end, the cross-sectional area of the expansion sub-part gradually decreases until the cross-sectional area is the same as that of the drainage section.

[0017] Optionally, in any two adjacent drainage sub-tubes, one side of one drainage section has a first notch, and one side of the other drainage section has a second notch, the first notch and the second notch form a drainage hole; from the direction of the distal end to the direction of the proximal end, a plurality of drainage holes are sequentially and spacedly arranged.

[0018] Optionally, the self-adjusting chest drainage tube further comprises a first hole-reducing member and a second hole-reducing member; the first hole-reducing member comprises a first hole-reducing film having a first through hole, and a first wire, the diameter of the first through hole is smaller than the diameter of the drainage hole; the first hole-reducing film is located in the main drainage channel and covers the drainage hole; one end of the first wire is located outside the main drainage channel; the other end of the first wire is arranged in the main drainage channel and connected to the end of the first hole-reducing film close to the distal end; the second hole-reducing member comprises a second hole-reducing film having a second through hole, and a second wire, the diameter of the second through hole is smaller than the diameter of the first through hole; the second hole-reducing film is located in the main drainage channel and covers the first through hole; the first wire is located between the second hole-reducing film and the first hole-reducing film; one end of the second wire is located outside the main drainage channel; the other end of the second wire is arranged in the main drainage channel and connected to the end of the second hole-reducing film close to the distal end.

[0019] Compared with the prior art, in the embodiment, the technical scheme of the embodiment forms the drainage tube body by using multiple drainage sub-tubes, so that multiple drainage sub-channels are arranged around the drainage main channel, and the drainage of the effusion in the thoracic cavity is performed through the cooperation of the drainage main channel and the multiple drainage sub-channels, and the drainage speed is accelerated. In the way of accelerating the drainage speed, the risk of blood clotting to block the drainage main channel or the drainage sub-channel can be reduced. When the pleural effusion contains blood, pus and solid impurities, there is a risk that the solid impurities will block the drainage main channel or part of the drainage sub-channels, but the self-adjusting thoracic drainage tube of the embodiment has multiple drainage sub-channels, so even if the solid impurities block the drainage main channel and part of the drainage sub-channels, the remaining part of the drainage sub-channels can still drain the pleural effusion, which reflects the self-adjusting adaptability of the thoracic drainage tube. Moreover, since the drainage tube body is composed of multiple drainage sub-tubes, the texture of the drainage tube body is softer than that of the existing thoracic drainage tube, and with the patient's breathing, the patient's chest and abdomen exert a slight extrusion on the drainage tube body, and the drainage tube body produces an effect similar to intestinal peristalsis, thereby accelerating the discharge of the pleural effusion and avoiding the risk of blockage of the thoracic drainage tube. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application, the related drawings will be briefly introduced below. It can be understood that the drawings described below are only used to illustrate some embodiments of the present application, and those skilled in the art can also obtain many other technical features and connection relationships not mentioned in this paper from these drawings.

[0021] Figure 1 is a cross-sectional view of an embodiment of a self-adjusting thoracic drainage tube of the present application in a use state Figure 1 ;

[0022] Figure 2 is a schematic view of an embodiment of a self-adjusting thoracic drainage tube of the present application in a non-use state

[0023] Figure 3 is an exploded schematic view of an embodiment of a self-adjusting thoracic drainage tube of the present application Figure 1 ;

[0024] Figure 4 is a cross-sectional view of an embodiment of a drainage sub-tube of a self-adjusting thoracic drainage tube of the present application Figure 1 ;

[0025] Figure 5 is an exploded schematic view of an embodiment of a self-adjusting thoracic drainage tube of the present application Figure 2 ;

[0026] Figure 6is a top view schematic of an embodiment of a self-adjusting chest drainage tube in use according to the invention Figure 1 ;

[0027] Figure 7 is a schematic view of an embodiment of a sub-tube of a self-adjusting chest drainage tube according to the invention

[0028] Figure 8 is a top view schematic of an embodiment of a self-adjusting chest drainage tube in use according to the invention Figure 2 ;

[0029] Figure 9 is a cross-sectional schematic view of an embodiment of a sub-tube of a self-adjusting chest drainage tube according to the invention Figure 2 ;

[0030] Figure 10 is a schematic view of an embodiment of a self-adjusting chest drainage tube in use according to the invention

[0031] Figure 11 is a partial exploded schematic view of an embodiment of a self-adjusting chest drainage tube according to the invention

[0032] Figure 12 is a partial schematic view of an embodiment of a self-adjusting chest drainage tube according to the invention Figure 1 ;

[0033] Figure 13 is a partial schematic view of an embodiment of a self-adjusting chest drainage tube according to the invention Figure 2 ;

[0034] Figure 14 is a cross-sectional schematic view of an embodiment of a constriction capsule of a self-adjusting chest drainage tube according to the invention Figure 1 ;

[0035] Figure 15 is a cross-sectional schematic view of an embodiment of a constriction capsule of a self-adjusting chest drainage tube according to the invention Figure 2 ;

[0036] Figure 16 is a cross-sectional schematic view of an embodiment of a constriction capsule of a self-adjusting chest drainage tube according to the invention Figure 3 ;

[0037] Figure 17 is a cross-sectional schematic view of an embodiment of a self-adjusting chest drainage tube in use according to the invention Figure 2 ;

[0038] Figure 18 is a structural schematic view of an embodiment of a sealing assembly of a self-adjusting chest drainage tube according to the invention

[0039] Figure 19 is a cross-sectional view of an embodiment of a self-adjusting chest drainage tube in use Figure 3 ;

[0040] Figure 20 is a schematic view of an embodiment of a first aperture member and a second aperture member of a self-adjusting chest drainage tube.

[0041] BRIEF DESCRIPTION OF DRAWINGS

[0042] 1, drainage tube body; 10, drainage main channel; 11, drainage sub-tube; 111, drainage sub-channel; 12, expansion section; 13, deformation section; 14, drainage section; 141, first notch; 142, second notch; 15, expansion sub-portion; 16, drainage portion; 17, expansion portion; 18, drainage hole; 19, expansion channel; 21, connecting film; 3, contraction capsule; 30, contraction capsule cavity; 31, first capsule cavity; 32, second capsule cavity; 33, extrusion hole; 34, transition hole; 4, adapter; 41, adapter channel; 42, communication channel; 43, clamping protrusion; 44, communication hole; 45, injection port; 46, fixing protrusion; 47, constraint hole; 48, constraint wire; 49, fixing ring; 51, communication tube; 6, hole sealing assembly; 61, hole sealing member; 62, first extraction wire; 63, hole sealing film; 64, first aperture member; 641, first aperture film; 642, first through hole; 65, second aperture member; 651, second aperture film; 652, second through hole; 66, second extraction wire; 67, third extraction wire. DETAILED DESCRIPTION

[0043] In order to enable a more detailed understanding of the features and technical content of the disclosed embodiments, the implementation of the disclosed embodiments will be described in detail below with reference to the accompanying drawings, which are for reference only and do not limit the disclosed embodiments. In the following technical description, in order to facilitate explanation, through multiple details, a sufficient understanding of the disclosed embodiments is provided. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0044] The terms "first", "second", and the like in the specification and claims of the disclosed embodiments and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the disclosed embodiments described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0045] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0046] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0047] Unless otherwise specified, the term "a plurality of" means two or more, and the term "a plurality of groups" means two groups or more.

[0048] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0049] The inventor found that the existing chest drainage tube has a slow drainage speed when draining pleural effusion, and impurities contained in the pleural effusion can block the chest drainage tube.

[0050] Therefore, the inventor of the present application provides a self-adjusting chest drainage tube to solve the above problems. The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0051] First embodiment

[0052] The self-adjusting chest drainage tube mentioned in this embodiment, as shown in Figure 1 , Figure 2 The self-adjusting chest drainage tube includes a drainage tube body 1. In this embodiment, in order to facilitate the introduction of the structure of the drainage tube body 1, the drainage tube body 1 is introduced in a state of use. A plurality of drainage sub-tubes 11 are uniformly arranged around an axis, and form a drainage tube body 1. The axis can be regarded as the axis of the drainage tube body 1, Figure 1The dotted line in the figure is the axis of the drainage tube body 1. That is, the plurality of drainage sub-tubes 11 are evenly arranged around the axis of the drainage tube body 1. The internal space of each drainage sub-tube 11 can be regarded as a drainage sub-channel 111. The drainage sub-tube 11 is divided into three parts, which are the expansion section 12, the deformation section 13, and the drainage section 14. From the direction of the distal end to the direction of the proximal end, the expansion section 12, the deformation section 13, and the drainage section 14 are sequentially arranged. In one drainage sub-tube 11, the expansion section 12 and the deformation section 13 of the drainage sub-tube 11 form an expansion sub-part 15. In the drainage tube body 1, the expansion sub-parts 15 of the plurality of drainage sub-tubes 11 form an expansion part 17 around the axis of the drainage tube body 1, so the expansion part 17 can also be regarded as being jointly surrounded by the plurality of expansion sections 12 and the plurality of deformation sections 13. The drainage sections 14 of the plurality of drainage sub-tubes 11 form a drainage part 16 around the axis of the drainage tube body 1, and the internal space of the drainage part 16 can be regarded as a drainage main channel 10. The internal space of the expansion part 17 can be regarded as an expansion channel 19, and the drainage main channel 10 and the expansion channel 19 are in communication. When the drainage tube body 1 is in a use state, from the direction of the distal end to the direction of the proximal end, the cross-sectional area of the expansion channel 19 gradually decreases until it is the same as the cross-sectional area of the drainage main channel 10. Optionally, the cross-sectional area of the end of the expansion channel 19 close to the distal end is 1.5-3 times the cross-sectional area of the drainage main channel 10. Preferably, the cross-sectional area of the end of the expansion channel 19 close to the distal end is 2 times the cross-sectional area of the drainage main channel 10. When the drainage tube body 1 is in a non-use state, the outer diameter of the expansion part 17 is the same as the outer diameter of the drainage main channel 10.

[0053] Optionally, as shown in Figure 3 The self-adjusting thoracic drainage tube further includes an adapter 4, and the adapter 4 has an adapter channel 41 inside. The shape of one channel opening of the adapter channel 41 is matched with the shape of the end of the drainage tube body 1 close to the proximal end, and the adapter 4 is sleeved on the end of the drainage tube body 1 close to the proximal end. One end of the hose is inserted into the other channel opening of the adapter channel 41, and the other end of the hose is inserted into the collection opening of the effusion collection bag, so as to achieve the purpose of collecting the thoracic effusion into the effusion collection bag. In the present technical solution, the hose and the effusion collection bag are all prior art, and will not be described in detail here.

[0054] The exemplary use process of the self-adjusting thoracic drainage tube disclosed in the present embodiment is as follows:

[0055] As shown in Figure 1 , Figure 2As shown, first, a scalpel is used to cut a wound on the human body to form a channel to the chest cavity. The length of the wound is the same as the outer diameter of the self-adjusting chest drainage tube of the embodiment, or the length of the wound is 1mm-3mm longer than the outer diameter of the self-adjusting chest drainage tube, so as to form a channel to the chest cavity. The operator squeezes the expansion part 17 and makes the drainage tube body 1 in a non-use state. The expansion part 17 of the drainage tube body 1 in the non-use state is inserted into the wound to the chest cavity. Then, the squeezing of the expansion part 17 is released, and the expansion part 17 changes from the non-use state to the use state. The expansion part 17 in the use state facilitates the collection of pleural effusion. The pleural effusion is drained through the cooperation of the drainage main channel 10 and the plurality of drainage sub-channels 111 of the drainage tube body 1.

[0056] Compared with the prior art, in the embodiment, the technical scheme of the embodiment forms the drainage tube body 1 by using a plurality of drainage sub-tubes 11, so that the plurality of drainage sub-channels 111 are arranged around the drainage main channel 10, and the pleural effusion in the chest cavity is drained through the cooperation of the drainage main channel 10 and the plurality of drainage sub-channels 111, and the drainage speed is accelerated. In this way, the risk of blood clotting to block the drainage main channel 10 or the drainage sub-channels 111 can be reduced. When the pleural effusion contains blood, pus and solid impurities, there is a risk that the solid impurities will block the drainage main channel 10 or part of the drainage sub-channels 111, but the self-adjusting chest drainage tube of the embodiment has a plurality of drainage sub-channels 111, so even if the solid impurities block the drainage main channel 10 and part of the drainage sub-channels 111, the remaining drainage sub-channels 111 can still drain the pleural effusion, which reflects the self-adjusting adaptability of the chest drainage tube. Moreover, since the drainage tube body 1 is composed of a plurality of drainage sub-tubes 11, the texture of the drainage tube body 1 is softer than that of the existing chest drainage tube. With the patient's breathing, the patient's chest and abdomen slightly squeeze the drainage tube body 1, and the drainage tube body 1 produces an effect similar to intestinal peristalsis, thereby accelerating the discharge of pleural effusion and avoiding the risk of blockage of the chest drainage tube.

[0057] Second embodiment

[0058] The second embodiment also proposes a self-adjusting chest drainage tube. The second embodiment is a parallel technical scheme of the first embodiment, and the difference between the second embodiment and the first embodiment is the structure of the drainage sub-tube. The specific scheme is as follows:

[0059] Optionally, as Figure 4As shown, due to the same structure of the plurality of drainage sub-tubes 11, one of the drainage sub-tubes 11 is taken as an example for introduction. The end of the expansion section 12 close to the distal end is sealed, so that the end of the drainage sub-channel 111 close to the distal end is in a closed state. Different from the first embodiment, the auxiliary drainage function of the drainage sub-channel 111 is changed to promote the drainage function of the main drainage channel 10.

[0060] Optionally, as shown in Figure 1 、 Figure 5 The self-adjusting chest drainage tube further comprises an adapter 4. The adapter 4 has an adapter channel 41 inside. The cavity wall of the adapter channel 41 has a communication channel 42. The communication channel 42 is arranged in a ring along the axis of the adapter 4. The outer wall of the adapter 4 has an injection port 45 which is in communication with the communication channel 42. The end face of the distal end of the adapter 4 has a plurality of clamping protrusions 43. The shape of the clamping protrusions 43 is matched with the shape of the drainage sub-channel 111. The number of the clamping protrusions 43 is the same as the number of the drainage sub-tubes 11. Each clamping protrusion 43 has a communication hole 44. Each communication hole 44 is in communication with the communication channel 42. By arranging the clamping protrusions 43 in the drainage sub-channel 111, the detachable connection between the adapter 4 and the drainage tube body 1 is realized, and the communication between the main drainage channel 10 and the adapter channel 41 is also realized. The cross-sectional area of the adapter channel 41 gradually decreases from the distal end to the proximal end. One end of the soft tube is inserted into the other channel port of the adapter channel 41, and the other end of the soft tube is inserted into the collection port of the effusion collection bag, so that the purpose of collecting the pleural effusion into the effusion collection bag is achieved. In this technical solution, the soft tube and the effusion collection bag are both prior art, and will not be described in detail here.

[0061] The exemplary use process of the self-adjusting chest drainage tube disclosed in this embodiment is as follows:

[0062] As shown in Figures 1 to 5 , first, a surgical knife is used to cut a wound on the human body. The length of the wound is the same as the outer diameter of the self-adjusting chest drainage tube of this embodiment, or the length of the wound is 1mm-3mm longer than the outer diameter of the self-adjusting chest drainage tube. Thus, a channel to the chest cavity is formed. The operator squeezes the expansion section 17 and makes the drainage tube body 1 in a non-use state. The expansion section 17 of the drainage tube body 1 in the non-use state is inserted into the wound to the chest cavity. Then, the squeezing of the expansion section 17 is released, and the expansion section 17 changes from the non-use state to the use state. The expansion section 17 in the use state facilitates the collection of pleural effusion. The pleural effusion in the chest cavity is drained through the main drainage channel 10 of the drainage tube body 1.

[0063] When the doctor finds that the drainage speed slows down and there is a risk that solid impurities block the main drainage channel 10, the doctor can connect the injection port 45 with the liquid pump, and the liquid pump can deliver physiological saline into the injection port 45, the physiological saline enters the communication channel 42 through the injection port 45, and enters the drainage sub-channel 111 through the communication hole 44, so that the drainage sub-tube 11 is inflated, and then the physiological saline in the drainage sub-channel 111 is pumped out by the liquid pump, so that the drainage sub-tube 11 returns to the original state. By repeatedly switching the drainage sub-tube 11 between the inflated state and the original state, the drainage tube body 1 produces an effect similar to intestinal peristalsis, thereby accelerating the drainage of the pleural effusion and avoiding the risk of blockage of the chest drainage tube.

[0064] Compared with the prior art, in the present embodiment, the technical scheme of the present embodiment forms the drainage tube body 1 by using a plurality of drainage sub-tubes 11, so that a plurality of drainage sub-channels 111 are arranged around the main drainage channel 10, and the end of the drainage sub-channel 111 close to the distal end is blocked. When the pleural effusion contains blood, pus and solid impurities, there is a risk that the solid impurities block the main drainage channel 10. By injecting physiological saline into the drainage sub-channel 111, the drainage sub-tube 11 is repeatedly switched between the inflated state and the original state, so that the drainage tube body 1 produces an effect similar to intestinal peristalsis, thereby accelerating the drainage of the pleural effusion and avoiding the risk of blockage of the chest drainage tube.

[0065] Third embodiment

[0066] The present embodiment also proposes a self-adjusting chest drainage tube, and the third embodiment is a further improvement based on the first or second embodiment, and the main improvement is the structure of the expansion part, which is as follows:

[0067] Optionally, as Figure 1 , Figure 2 , Figure 6As shown, since the plurality of drainage sub-tubes 11 are of the same structure, the structure of one drainage sub-tube is taken as an example for introduction. The drainage sub-tube 11 is of a circular tube structure, the inner diameter of the expansion section 12 and the inner diameter of the deformation section 13 are the same as the inner diameter of the drainage section 14, and the outer diameter of the expansion section 12 and the outer diameter of the deformation section 13 are the same as the outer diameter of the drainage section 14. When the plurality of drainage sub-tubes 11 form the drainage tube body 1, and the drainage tube body 1 is in a use state, between any two adjacent drainage sub-tubes 11, there is a gap between the expansion sub-sections 15 of the two drainage sub-tubes 11. The existence of the gap is not convenient for the pleural effusion to enter the drainage main channel 10. In the technical solution, the self-adjusting pleural drainage tube further comprises a connecting film 21, the number of the connecting film 21 is the same as the number of the gap. Taking the drainage tube body 1 in the use state as an example for introduction, the connecting film 21 in the unfolded state is in the shape of a sector, and the connecting film 21 is arranged in the gap. One side of the connecting film 21 is connected with the expansion sub-section 15 of one drainage sub-tube 11, and the other side of the connecting film 21 is connected with the expansion sub-section 15 of the other drainage sub-tube 11, so that the connecting film 21 can be regarded as being located at the expansion section 17 of the drainage tube body 1. In the technical solution, the gap between the two expansion sub-sections 15 is blocked by the connecting film 21, and the structure of the expansion section 17 is further improved, so that the structure of the expansion section 17 is in the shape of a funnel. The internal space of the expansion section 17 is convenient for collecting the pleural effusion and gathering the pleural effusion into the drainage main channel 10. When the drainage tube body 1 is in a non-use state, the outer diameter of the expansion section 17 is the same as the outer diameter of the drainage main channel 10. At this time, the connecting film 21 is folded, the folded connecting film 21 is located in the expansion channel 19, and the two adjacent drainage sub-tubes 11 are in contact with each other. In this way, the drainage tube body can be arranged in the pleural cavity.

[0068] Optionally, as Figure 1 、 Figure 7 、 Figure 8As shown, since the structures of multiple drainage tubes 11 are identical, the structure of one drainage tube will be described as an example. The cross-sectional area of ​​the distal end of the dilation section 15 is larger than that of the proximal end, and the cross-sectional area of ​​the proximal end of the dilation section 15 is the same as that of the drainage section 14. From the distal end to the proximal end, the cross-sectional area of ​​the dilation section 15 gradually decreases until it is the same as that of the drainage section 14. The wall thickness of the drainage section 14 is 1.5 to 3 times that of the wall thickness of the dilation section 15. Taking the drainage tube body 1 in use as an example, the dilation sections 15 of the multiple drainage tubes 11 surround a funnel-shaped dilation section 17, and the internal space of the dilation section 17 is a dilation channel 19. The dilation channel 19 of the dilation section 17 facilitates the collection of pleural effusion and gathers the pleural effusion into the main drainage channel 10. When the drainage tube body 1 is not in use, the expansion sections 15 of multiple drainage sub-tubes 11 together form an expansion section 17, and the outer diameter of the expansion section 17 is the same as the outer diameter of the main drainage channel 10. At this time, one side wall of the expansion section 15 located within the expansion channel 19 protrudes towards the axis of the drainage tube body 1, allowing adjacent drainage sub-tubes 11 to contact each other. This facilitates the placement of the drainage tube body within the pleural cavity. If this technical solution is applied to the first embodiment, the structure of the expansion section 15 also facilitates the drainage of pleural effusion into the drainage sub-channel 111. If this technical solution is applied to the second embodiment, the structure of the expansion section 15 can enhance the drainage effect of pleural effusion, thereby avoiding the risk of blockage of the pleural drainage tube.

[0069] Optional, such as Figure 1 , Figure 7 , Figure 9 As shown, based on the above-mentioned optional technical solutions, the structure of the expansion sub-section 15 is further improved. The expansion sub-section 15 has multiple fixing protrusions 46 on one side wall outside the expansion channel 19. All fixing protrusions 46 are located on the side wall away from the axis of the drainage tube body 1. Specifically, the fixing protrusions 46 are arranged sequentially at intervals from the distal end to the proximal end. Optionally, the fixing protrusions 46 are hemispherical in shape, and their diameter is 1mm to 2mm. By providing fixing protrusions 46 on the expansion sub-section 15, the fixing protrusions 46 can increase the stability of the expansion section 17 within the thoracic cavity during use.

[0070] You may choose any one of the three technical solutions mentioned above.

[0071] Fourth embodiment

[0072] This embodiment also proposes a self-adjusting chest drainage tube. The fourth embodiment is a further improvement based on any one of the first to third embodiments, with the main improvement being in the structure of the expansion section. The specific solution is as follows:

[0073] As Figure 1 , Figure 6 , Figure 10 shown, in each drainage sub-tube 11, the expansion section 12 has a constraint hole 47 at one end close to the distal end, and the constraint hole 47 is located on one side of the expansion section 12 close to the expansion channel 19. The self-adjusting chest drainage tube further comprises a constraint wire 48 made of metal material or flexible material, for example, the constraint wire 48 is made of stainless steel, or the constraint wire 48 is made of medical silica gel material. One end of the constraint wire 48 is arranged outside the drainage main channel 10. Then the other end of the constraint wire 48 is threaded into the expansion channel 19 of the expansion section 17 through the drainage main channel 10, and then sequentially threaded through the constraint hole 47 of each drainage sub-tube 11, and then threaded through the expansion channel 19, the drainage main channel 10 to the outside of the drainage main channel 10, at this time, both ends of the constraint wire 48 are located outside the drainage main channel 10, and located at one end of the drainage main channel 10 close to the proximal end.

[0074] By moving both ends of the constraint wire 48 towards the proximal end at the same time, as the constraint wire 48 moves towards the proximal end, the plurality of expansion sub-sections 15 move towards the axis of the drainage tube body 1 at one end close to the distal end, and the outer diameter of the expansion section 17 is the same as the outer diameter of the drainage main channel 10. Stop moving the constraint wire 48, at this time, the drainage tube body 1 is in a non-use state. In this way, the expansion section 17 can be threaded through the wound to the chest cavity. When the expansion section 17 is located in the chest cavity, the operator loosens one end of the constraint wire 48 and drives the other end of the constraint wire 48 to move towards the proximal end, so that the constraint wire 48 can be removed from the drainage tube body 1. Due to the lack of constraint of the constraint wire 48, the plurality of expansion sub-sections 15 move away from the axis of the drainage tube body 1 at one end close to the distal end, so that the drainage tube body 1 can be switched from the non-use state to the use state, facilitating the drainage of the chest fluid.

[0075] Optionally, as Figure 10 shown, on the basis of the above technical solution, one of the plurality of drainage sub-tubes 11 has a fixing ring 49 on the drainage section 14 of the drainage sub-tube 11, the fixing ring 49 is located at one end of the drainage section 14 close to the proximal end, and the fixing ring 49 is located outside the drainage main channel 10. When the drainage tube body 1 is in a non-use state, both ends of the constraint wire 48 are threaded through the ring hole of the fixing ring 49 and fixed on the fixing ring 49 by lacing. In this way, the drainage tube body 1 can be stably placed in a non-use state.

[0076] Fifth embodiment

[0077] The embodiment also proposes a self-adjusting chest drainage tube, and the fifth embodiment is a further improvement based on any one of the first to fourth embodiments, mainly improving that the drainage tube body has a drainage hole, and the specific scheme is as follows:

[0078] Optionally, as shown in Figure 1 、 Figure 11 、 Figure 12 Among the plurality of drainage sub-tubes 11 constituting the drainage tube body 1, two adjacent drainage sub-tubes 11 are optional. In the two adjacent drainage sub-tubes 11, a part of the drainage section 14 of one drainage sub-tube 11 is recessed towards the direction away from the other drainage sub-tube 11, and forms a first notch 141, and the first notch 141 is located at the end of the drainage section 14 of the drainage sub-tube 11 close to the expansion sub-portion 15, that is, the drainage section 14 of the drainage sub-tube 11 has the first notch 141. Correspondingly, a part of the drainage section 14 of the other drainage sub-tube 11 is recessed towards the direction away from the drainage sub-tube 11 with the first notch 141, and forms a second notch 142, and the second notch 142 is located at the end of the drainage section 14 of the drainage sub-tube 11 close to the expansion sub-portion 15, that is, the drainage section 14 of the drainage sub-tube 11 has the second notch 142. Since the two drainage sub-tubes 11 are adjacent, the first notch 141 and the second notch 142 constitute the drainage hole 18. By providing the drainage hole 18 on the drainage tube body 1, the risk of the chest drainage tube being blocked can be reduced, and the drainage effect of the pleural effusion can be enhanced.

[0079] Optionally, as shown in Figure 12 Based on the above optional technical solutions, the drainage hole 18 is further improved, and the number of the drainage hole 18 is multiple, and the multiple drainage holes 18 are sequentially and spacedly arranged from the direction of the distal end to the direction of the proximal end. By providing the multiple drainage holes 18 on the drainage tube body 1, the risk of the chest drainage tube being blocked can be further reduced, and the drainage effect of the pleural effusion can be further enhanced.

[0080] Optionally, as shown in Figure 1 、 Figure 13 、 Figure 14As shown in the above two optional technical solutions, the self-adjusting chest drainage tube further comprises a communication pipe 51 and a contraction capsule 3. The contraction capsule 3 has an extrusion hole 33 at a middle position. When the contraction capsule 3 is arranged in the drainage hole 18, the extrusion hole 33 can be regarded as the drainage hole 18. The contraction capsule 3 has a contraction capsule cavity 30. The communication pipe 51 is located outside the drainage main channel 10 and between the two drainage sub-pipes 11 forming the drainage hole 18. One end of the communication pipe 51 communicates with the contraction capsule cavity 30, and the other end of the communication pipe 51 is located at one end of the drainage pipe body 1 close to the proximal end. The other end of the communication pipe 51 communicates with the liquid outlet of the liquid pump. In this technical solution, the liquid pump is a prior art, which will not be described in detail here. The wall thickness of the contraction capsule cavity 30 is uniform and consistent. When the contraction capsule 3 is in an expanded state, the contraction capsule 3 has a ring structure. When the contraction capsule 3 is in an original state, the contraction capsule 3 adheres to the hole wall of the drainage hole 18. When solid impurities in the pleural effusion block the drainage hole 18, or the viscosity of the pleural effusion is too large to cause slow drainage, the physiological saline flows out from the liquid outlet of the liquid pump and is injected into the contraction capsule cavity 30 through the communication pipe 51, so as to make the contraction capsule 3 expand, so that the drainage hole 18 becomes smaller. Then, the physiological saline in the contraction capsule cavity 30 is pumped out by the liquid pump, and the contraction capsule 3 returns to the original state. The contraction capsule 3 is repeatedly switched between the expanded state and the original state, so that the pleural effusion is extruded, and the pleural effusion is quickly guided through the drainage hole 18 and into the drainage main channel 10. By arranging the contraction capsule 3 in the drainage hole 18, the risk of blocking the drainage hole 18 by the pleural effusion is reduced, and the drainage effect is improved.

[0081] Alternatively, as shown in Figure 15 , Figure 16 The difference between the above technical solution and the present application is the structure of the contraction capsule. The contraction capsule 3 has a first capsule cavity 31 and a second capsule cavity 32. The first capsule cavity 31 communicates with the second capsule cavity 32 through a transition hole 34. One end of the communication pipe 51 communicates with the first capsule cavity 31, so that the communication pipe 51 communicates with the second capsule cavity 32 through the first capsule cavity 31. The contraction capsule 3 is divided into two parts, one part close to the proximal end and the other part close to the distal end. The first capsule cavity 31 is located in the part close to the proximal end, and the second capsule cavity 32 is located in the part close to the distal end. The thickness of the cavity wall of the second capsule cavity 32 is 1.5 to 3 times the thickness of the cavity wall of the first capsule cavity 31. Such a design is more conducive to the expansion of the first capsule cavity 31, and the volume of the first capsule cavity 31 in the expanded state is larger than the volume of the second capsule cavity 32. When the contraction capsule 3 is in the expanded state, the first capsule cavity 31 is in the expanded state, and the second capsule cavity 32 is in the original state. Figure 15As shown in the original state, the contraction capsule 3 is attached to the hole wall of the drainage hole 18. When solid impurities in the pleural effusion block the drainage hole 18, or the viscosity of the pleural effusion is too large to cause slow drainage, the physiological saline flows out from the outlet of the liquid pump and is injected into the first capsule cavity 31 through the connecting pipe 51. A part of the physiological saline enters the second capsule cavity 32 through the first capsule cavity 31, and the other part of the physiological saline remains in the first capsule cavity 31. By using the difference between the cavity wall thickness of the first capsule cavity 31 and the cavity wall thickness of the second capsule cavity 32, the first capsule cavity 31 expands in the direction where the second capsule cavity 32 is located, so that the drainage hole 18 becomes smaller, that is, the contraction capsule 3 is in the expanded state as shown in Figure 16 After that, the physiological saline in the first capsule cavity 31 and the second capsule cavity 32 is pumped out by the liquid pump, and the contraction capsule 3 returns to the original state. By repeatedly controlling the contraction capsule 3 to switch between the expanded state and the original state, the solid impurities or the pleural effusion is squeezed by using the non-uniform expansion method, and the squeezing degree is greater. The risk of the pleural effusion blocking the drainage hole 18 is further reduced, and the drainage effect is improved.

[0082] The above four optional technical solutions can be selected.

[0083] Sixth embodiment

[0084] This embodiment also proposes a self-adjusting chest drainage tube, and the sixth embodiment is a further improvement based on the fifth embodiment. The main improvement is that:

[0085] Optionally, as shown in Figure 17 The self-adjusting chest drainage tube further comprises a hole sealing assembly 6, which is arranged in the drainage hole 18 and is used to seal the drainage hole 18. The hole sealing assembly 6 comprises a hole sealing piece 61 and a first pulling wire 62. The shape of the hole sealing piece 61 is matched with the shape of the drainage hole 18, and the hole sealing piece 61 is arranged in the drainage hole 18. One end of the first pulling wire 62 is arranged outside the drainage main channel 10 and is bonded to one drainage sub-tube 11 by using hot melt adhesive. The other end of the first pulling wire 62 is arranged in the drainage main channel 10 and is connected to the hole sealing piece 61.

[0086] Optionally, as shown in Figure 17 , Figure 18 On the basis of the above technical solutions, the hole sealing assembly 6 further comprises a hole sealing film 63, the hole sealing piece 61 is arranged at the center position of the hole sealing film 63, and the other end of the first pulling wire 62 is connected to the end close to the distal end of the hole sealing film 63. The first pulling wire 62 and the hole sealing piece 61 are connected through the hole sealing film 63, the hole sealing film 63 can seal the gap between the hole sealing piece 61 and the drainage hole 18, and the first pulling wire 62 can more easily take out the hole sealing piece 61 from the drainage hole 18 through the hole sealing film 63.

[0087] The two optional technical solutions can be selected.

[0088] The exemplary use process of the self-adjusting chest drainage tube disclosed in the embodiment is as follows:

[0089] As shown in Figure 17 , Figure 18 , the self-adjusting chest drainage tube is implanted into the chest cavity and used to drain the pleural effusion. After a period of time, the operator observes that the solid impurities in the pleural effusion will block the main drainage channel 10 or the sub-drainage channel 111. In order to smoothly drain the pleural effusion, the operator removes the other end of the first pull wire 62 from the sub-drainage tube 11 and drives the first pull wire 62 to move proximally. The first pull wire 62 drives the sealing member 61 to fall off from the drainage hole 18, thereby opening the drainage hole 18. In this way, a new drainage hole 18 can be constructed on the drainage tube body 1, which is convenient for the drainage of the pleural effusion.

[0090] Seventh Embodiment

[0091] The seventh embodiment also proposes a self-adjusting chest drainage tube. The seventh embodiment is a parallel technical solution of the sixth embodiment. The technical solution of the seventh embodiment is as follows:

[0092] Optionally, as shown in Figure 19 , Figure 20As shown, the self-adjusting chest drainage tube also includes a first constriction member 64 and a second constriction member 65. The first constriction member 64 includes a first constriction membrane 641 and a first thread 62. The first constriction membrane 641 has a first through hole 642, and the diameter of the first through hole 642 is smaller than the diameter of the drainage hole 18. The first constriction membrane 641 is disposed inside the main drainage channel 10 and is adhered to the cavity wall of the main drainage channel 10, covering the drainage hole 18. The first through hole 642 is coaxially arranged with the drainage hole 18. One end of the first thread 62 is disposed outside the main drainage channel 10 and is glued to a drainage sub-tube 11 with hot melt adhesive. The other end of the first thread 62 passes through the main drainage channel 10 and is connected to the distal end of the first constriction membrane 641. The second constriction member 65 includes a second constriction membrane 651 and a second wire 66. The length and width of the second constriction membrane 651 are smaller than those of the first constriction membrane 641. The second constriction membrane 651 has a second through hole 652, and the diameter of the second through hole 652 is smaller than that of the first through hole 642. The second constriction membrane 651 is disposed inside the main drainage channel 10 and is adhered to the first constriction membrane 641. The first wire 62 is located between the first constriction membrane 641 and the second constriction membrane 651. The second constriction membrane 651 covers the first through hole 642. The second through hole 652 and the first through hole 642 are coaxially arranged. One end of the second wire 66 is located outside the main drainage channel 10 and is bonded to another drainage tube 11 with hot melt adhesive. The other end of the second wire 66 is inserted into the main drainage channel 10, and the other end of the second wire 66 is connected to the end of the second pore membrane 651 near the distal end.

[0093] Optional, such as Figure 19 , Figure 20 As shown, based on the above technical solution, the self-adjusting chest drainage tube also includes a sealing membrane 63 and a third thread 67. The length and width of the sealing membrane 63 are smaller than those of the second constriction membrane 651. The sealing membrane 63 is disposed within the main drainage channel 10 and is adhered to the second constriction membrane 651, with the second thread 66 located between the sealing membrane 63 and the second constriction membrane 651. The sealing membrane 63 seals the second constriction membrane 651. One end of the third thread 67 is located outside the main drainage channel 10 and is adhered to another drainage sub-tube 11 with hot melt adhesive. The other end of the third thread 67 passes through the main drainage channel 10 and is connected to the distal end of the sealing membrane 63.

[0094] Optionally, not shown in the figure, the diameter of the first through hole 642 is 1 / 4 to 1 / 3 of the diameter of the drainage hole 18. The diameter of the second through hole 652 is 1 / 3 to 1 / 2 of the diameter of the first through hole 642. By gradually opening the second through hole 652, the first through hole 642, and the drainage hole 18, the surgeon can flexibly adjust the drainage effect of the pleural effusion.

[0095] You may choose any one of the three technical solutions mentioned above.

[0096] The exemplary usage of the self-adjusting chest drainage tube disclosed in this embodiment is as follows:

[0097] like Figure 19 , Figure 20 As shown, in this embodiment, a self-adjusting chest drainage tube is implanted into the pleural cavity to drain pleural effusion. After a period of time, if the surgeon observes that solid impurities in the pleural effusion are blocking the main drainage channel 10 or the sub-drainage channel 111, in order to facilitate the drainage of the pleural effusion, the surgeon first removes the third guide wire 67 from the sub-drainage tube 11 and drives the third guide wire 67 to move proximally. The third guide wire 67 causes the sealing membrane 63 to detach from the second constriction membrane 651, thereby opening the second through hole 652, which facilitates the drainage of pleural effusion. When the surgeon finds that the drainage speed has slowed down, the surgeon can also remove the second guide wire 66 from the sub-drainage tube 11 and drive the second guide wire 66 to move proximally. The second guide wire 66 causes the second constriction membrane 651 to detach from the first constriction membrane 641, thereby opening the first through hole 642, which further facilitates the drainage of pleural effusion. Of course, after the second constriction membrane 651 detaches from the first constriction membrane 641, the surgeon can continue to remove the first filament 62 from the drainage tube 11 and drive the first filament 62 to move proximally. The first filament 62 drives the first constriction membrane 641 to detach from the cavity wall of the main drainage channel 10, thereby completely opening the drainage hole 18. At this time, the drainage effect on pleural effusion is the best.

[0098] Finally, it should be noted that those skilled in the art will understand that many technical details have been presented in the embodiments of the present invention to facilitate a better understanding of the invention. However, even without these technical details and various variations and modifications based on the above embodiments, the technical solutions claimed in the claims of the present invention can be substantially achieved. Therefore, in practical applications, various changes in form and detail can be made to the above embodiments without departing from the spirit and scope of the present invention.

Claims

1. A self-adjusting chest drainage tube, characterized in that, The drainage tube body has a drainage main channel; the drainage tube body comprises a plurality of drainage sub-tubes, the plurality of drainage sub-tubes are uniformly arranged around an axis of the drainage tube body, each drainage sub-tube has a drainage sub-channel; the drainage sub-tube comprises, from a distal end to a proximal end, a dilation segment, a deformation segment and a drainage segment, the plurality of dilation segments and the plurality of deformation segments jointly surround a dilation part; the plurality of drainage segments surround the drainage main channel; In any two adjacent drainage sub-tubes, one side of one drainage segment has a first gap, and one side of another drainage segment has a second gap, the first gap and the second gap form a drainage hole; From a direction of the distal end to a direction of the proximal end, the plurality of drainage holes are sequentially and spacedly arranged; In use, from the direction of the distal end to the direction of the proximal end, a cross-sectional area of an internal space of the dilation part gradually decreases until the cross-sectional area is the same as that of the drainage main channel. Further comprising:

2. A self-regulating chest drainage tube according to claim 1, characterized in that A connecting film is arranged between the two adjacent drainage sub-tubes and located at the dilation part; In use, the connecting film in the unfolded state is used to block a gap between the two adjacent drainage sub-tubes.

3. The self-adjusting chest drainage tube according to claim 1, wherein In one drainage sub-tube, the dilation segment and the deformation segment form a dilation sub-part; In use, from the direction of the distal end to the direction of the proximal end, a cross-sectional area of the dilation sub-part gradually decreases until the cross-sectional area is the same as that of the drainage segment. Further comprising:

4. The self-adjusting chest drainage tube of claim 1, wherein, A constriction capsule body has a ring structure and a constriction capsule cavity; The constriction capsule body is arranged in the drainage hole; A communication tube is arranged between the two adjacent drainage sub-tubes; one end of the communication tube communicates with the constriction capsule cavity, and the other end of the communication tube is located at one end of the drainage tube body close to the proximal end. Further comprising:

5. The self-adjusting chest drainage tube of claim 1, wherein, A constriction capsule body has a first capsule cavity and a second capsule cavity and is arranged in the drainage hole; A communication tube is arranged between the two adjacent drainage sub-tubes; one end of the communication tube communicates with the first capsule cavity and the second capsule cavity, and the other end of the communication tube is located at one end of the drainage tube body close to the proximal end; When the constriction capsule body is inflated, the volume of the first capsule cavity is greater than that of the second capsule cavity, and the first capsule cavity expands in the direction of the second capsule cavity. Further comprising a hole sealing assembly arranged in the drainage hole, the hole sealing assembly is used to seal the drainage hole; the hole sealing assembly comprises:

6. The self-adjusting chest drainage tube of claim 1, wherein, A hole sealing piece is arranged in the drainage hole; A first wire has one end located outside the drainage main channel and the other end penetrating into the drainage main channel and connected with the hole sealing piece. Each dilation segment has a constraint hole at one end close to the distal end; the self-adjusting chest drainage tube further comprises:

7. The self-adjusting chest drainage tube of claim 1, wherein, A constraint wire has one end located outside the drainage main channel and the other end penetrating the drainage main channel into the dilation part and then penetrating the drainage main channel to outside the drainage main channel after penetrating the plurality of constraint holes. ​ 8. A self-adjusting chest drainage tube, characterized in that, ​ The drainage tube body has a drainage main channel; the drainage tube body comprises a plurality of drainage sub-tubes, the plurality of drainage sub-tubes are uniformly arranged around an axis of the drainage tube body, each drainage sub-tube has a drainage sub-channel, and the drainage sub-channel is sealed at one end close to a distal end; the drainage sub-tube comprises, from the distal end to the proximal end, an expansion section, a deformation section, and a drainage section, and the plurality of expansion sections and the plurality of deformation sections jointly surround an expansion part; the plurality of drainage sections surround the drainage main channel; In any two adjacent drainage sub-tubes, one side of one drainage section has a first notch, and one side of another drainage section has a second notch, and the first notch and the second notch form a drainage hole; From the direction of the distal end to the direction of the proximal end, the plurality of drainage holes are sequentially and spacedly arranged; In a use state, from the direction of the distal end to the direction of the proximal end, the cross-sectional area of the internal space of the expansion part gradually decreases until the cross-sectional area is the same as that of the drainage main channel.

9. A self-regulating chest drainage tube according to claim 8, wherein, Further comprising: A connecting film is arranged between the two adjacent drainage sub-tubes and located at the expansion part; In use, the connecting film in the unfolded state is used to block the gap between the two adjacent drainage sub-tubes.

10. The self-adjusting chest drainage tube according to claim 8, characterized in that, In one drainage sub-tube, the expansion section and the deformation section form an expansion sub-part; In use, from the direction of the distal end to the direction of the proximal end, the cross-sectional area of the expansion sub-part gradually decreases until the cross-sectional area is the same as that of the drainage section.

11. The self-adjusting chest drainage tube of claim 8, wherein, Further comprising: A first aperture member comprises a first aperture film having a first through hole, and a first wire, and the aperture diameter of the first through hole is smaller than the aperture diameter of the drainage hole; The first aperture film is located in the drainage main channel and covers the drainage hole; one end of the first wire is located outside the drainage main channel; the other end of the first wire is arranged in the drainage main channel and connected to the end of the first aperture film close to the distal end; A second aperture member comprises a second aperture film having a second through hole, and a second wire, and the aperture diameter of the second through hole is smaller than the aperture diameter of the first through hole; the second aperture film is located in the drainage main channel and covers the first through hole; the first wire is located between the second aperture film and the first aperture film; one end of the second wire is located outside the drainage main channel; the other end of the second wire is arranged in the drainage main channel and connected to the end of the second aperture film close to the distal end.

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