Drainage tube

Abstract

The drainage tube comprises an outer tube body, a flexible inner tube body and an air bag assembly, the outer tube body comprises an insertion end and an indwelling end, the insertion end is used for being inserted into the body of a patient, and the indwelling end is used for being indwelled outside the body of the patient; the inner tube body is arranged in the outer tube body, one end of the inner tube body is connected to the insertion end, and an air bag space is formed between the outer peripheral surface of the inner tube body and the inner peripheral surface of the outer tube body; the air bag assembly is arranged in the air bag space and comprises a plurality of elastic air bags which are sequentially communicated, the elastic air bags are sequentially arranged in the axial direction of the outer tube body, the ends, away from the insertion end, of the elastic air bags are communicated with the outside, and the ends, away from the indwelling end, of the elastic air bags are used for being communicated with the pulse inflation assembly; the air bag assembly is configured in the mode that in the working state, the air bag assembly is filled with pulse air flow, the elastic air bags are sequentially expanded and retracted in the direction from the insertion end to the remaining end, and the elastic air bags are alternately expanded and retracted so as to extrude the inner tube body.

Description

Technical Field

[0001] The present invention relates to medical devices, and particularly to drainage tubes. Background Art

[0002] A drainage tube is a medical device that guides pus, blood, or fluid accumulated between human tissues or in body cavities to the outside of the body to prevent postoperative infections and promote wound healing.

[0003] During the use of a drainage tube, a part of the drainage tube is inserted into the human body, and the other part is located outside the human body. In related technologies, the drainage tube generally sucks out the liquid in the human body by means of negative pressure suction outside the human body. However, when objects such as blood clots in the human body enter the drainage tube, it is easy to block the drainage tube, making it difficult to continue using. Medical staff can only perform manual negative pressure multiple times or replace the drainage tube, which is very inconvenient to operate. 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 invention provides three types of drainage tubes that can prevent blockage and improve the convenience of use.

[0005] The drainage tube according to an embodiment of the first aspect of the present invention includes: An outer tube body including an insertion end and a retention end, where the insertion end is used to be inserted into a patient's body, and the retention end is used to be retained outside the patient's body; A flexible inner tube body disposed inside the outer tube body. One end of the inner tube body is connected to the insertion end, and an airbag space is formed between the outer peripheral surface of the inner tube body and the inner peripheral surface of the outer tube body; An airbag assembly disposed in the airbag space and including a plurality of elastic airbags that are sequentially communicated. The plurality of elastic airbags are sequentially arranged along the axial direction of the outer tube body. One end of the plurality of elastic airbags away from the insertion end communicates with the outside, and one end of the plurality of elastic airbags away from the retention end is used to communicate with a pulse inflation assembly; Wherein, the airbag assembly is configured such that in a working state, pulsed air flows into the airbag assembly, and the plurality of elastic airbags sequentially expand and contract along the direction from the insertion end to the retention end. The elastic airbags alternately expand and contract to squeeze the inner tube body.

[0006] The drainage tube according to an embodiment of the first aspect of the present invention has at least the following beneficial effects: 1. After the pulse inflation assembly provides a pulsed air flow, a plurality of elastic air bags will expand and retract in sequence, so that all the elastic air bags form a wave-like motion, and all the elastic air bags will squeeze the liquid inside the inner tube body in the direction from the insertion end to the indwelling end, enabling the inner tube body to "peristalsis" in the direction from the insertion end to the indwelling end. The drainage tube has a stronger ability to discharge solid objects such as blood clots and a stronger anti-blocking ability. 2. The air bag assembly is close to the insertion end of the outer tube body, so the air bag assembly can penetrate deep into the patient's body and perform squeezing drainage inside the patient's body to discharge the corresponding blood clots, reducing the occurrence of the situation where the drainage tube in the patient's body is blocked and only the drainage tube can be replaced, reducing the risk of drainage tube blockage, and reducing the risks of infection and multiple surgeries for the patient, which is more conducive to the patient's recovery.

[0007] According to some embodiments of the present invention, the air bag assembly further includes a plurality of connecting pipes, and the connecting pipes communicate between two adjacent elastic air bags.

[0008] According to some embodiments of the present invention, the diameters of the plurality of connecting pipes increase in sequence along the direction from the insertion end to the indwelling end.

[0009] According to some embodiments of the present invention, one end of the inner tube body is detachably connected to the insertion end.

[0010] According to some embodiments of the present invention, the plurality of elastic air bags are spirally distributed along the inner circumferential surface of the outer tube body; Or, the plurality of elastic air bags are sequentially distributed along the axial direction of the outer tube body.

[0011] According to some embodiments of the present invention, the outer tube body has a drainage opening at the insertion end, and the drainage opening communicates with the side wall of the outer tube body and / or one end of the outer tube body.

[0012] According to some embodiments of the present invention, it includes: multiple groups of the air bag assemblies, and the multiple groups of the air bag assemblies are sequentially distributed around the circumferential direction of the inner tube body.

[0013] According to some embodiments of the present invention, the elastic air bags in the plurality of air bag assemblies are sequentially offset along the axial direction of the inner tube body.

[0014] According to some embodiments of the present invention, the air bag assembly further includes an input pipe, the input pipe is arranged along the axial direction of the inner tube body, and is sequentially arranged with the plurality of elastic air bags along the circumferential direction of the inner tube body, and one end of the input pipe communicates with one end of the plurality of elastic air bags away from the indwelling end.

[0015] The drainage tube according to the second aspect embodiment of the present invention includes: The outer tube body includes an insertion end and a retention end. The insertion end is for inserting into the patient's body, and the retention end is for being retained outside the patient's body. The airbag assembly is disposed on the inner peripheral surface of the outer tube body. The airbag assembly includes a plurality of elastic airbags that are sequentially connected. The plurality of elastic airbags are sequentially arranged along the axial direction of the outer tube body. One end of the plurality of elastic airbags away from the insertion end communicates with the outside, and one end of the plurality of elastic airbags away from the retention end is for communicating with a pulsed inflation assembly. Wherein, the airbag assembly is configured such that in the working state, pulsed air flows into the airbag assembly, and the plurality of elastic airbags sequentially expand and contract along the direction from the insertion end to the retention end, and the elastic airbags alternately expand and contract.

[0016] The drainage tube according to the second aspect embodiment of the present invention has at least the following beneficial effects: 1. After the pulsed inflation assembly provides pulsed air flow, the plurality of elastic airbags will sequentially expand and contract, so that all the elastic airbags form a wavy motion, and all the elastic airbags will squeeze the liquid inside the outer tube body along the direction from the insertion end to the retention end. The elastic airbags can "peristalsis" along the direction from the insertion end to the retention end. The drainage tube has a stronger ability to discharge solid objects such as blood clots and a stronger anti-blocking ability. 2. The airbag assembly is close to the insertion end of the outer tube body, so the airbag assembly can penetrate deep into the patient's body and perform squeezing drainage inside the patient's body to discharge the corresponding blood clots, reducing the situation where the drainage tube in the patient's body is blocked and only the drainage tube can be replaced, reducing the risk of drainage tube blockage, and reducing the risk of multiple surgeries for the patient, which is more beneficial to the patient's recovery.

[0017] The drainage tube according to the third aspect embodiment of the present invention includes: The outer tube body includes an insertion end and a retention end. The insertion end is for inserting into the patient's body, and the retention end is for being retained outside the patient's body. The airbag assembly is disposed on the inner peripheral surface of the outer tube body. The airbag assembly includes a plurality of elastic airbags arranged at intervals in sequence and a plurality of connecting pipes. The plurality of elastic airbags are sequentially arranged along the axial direction of the outer tube body, and the connecting pipes are respectively connected to at least one of the elastic airbags. Wherein, the airbag assembly is configured such that in the working state, all the elastic airbags sequentially expand and contract along the direction from the insertion end to the retention end, and the elastic airbags alternately expand and contract.

[0018] The drainage tube according to the third aspect embodiment of the present invention has at least the following beneficial effects: 1. In the working state, all the elastic airbags form a wavy motion, and all the elastic airbags squeeze the liquid inside the outer tube body in the direction from the insertion end to the indwelling end. The elastic airbags can "peristalsis" in the direction from the insertion end to the indwelling end, so that the drainage tube has a stronger ability to discharge solid objects such as blood clots and a stronger anti-blocking ability. 2. The airbag assembly is close to the insertion end of the outer tube body, so the airbag assembly can penetrate deep into the patient's body and perform squeezing drainage in the patient's body to discharge the corresponding blood clots, reducing the occurrence of the situation where the drainage tube in the patient's body is blocked and only the drainage tube can be replaced, reducing the risk of drainage tube blockage, and reducing the risk of multiple surgeries for the patient, which is more conducive to the patient's recovery.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the drawings and embodiments, where: Figure 1 is the first cross-sectional schematic diagram of the drainage tube in an embodiment of the present invention when the inner tube body is not installed; Figure 2 is the second cross-sectional schematic diagram of the drainage tube in an embodiment of the present invention when the inner tube body is not installed; Figure 3 is Figure 2 the partial enlarged schematic diagram of part A in Figure 4 is the cross-sectional schematic diagram of the drainage tube in an embodiment of the present invention; Figure 5 is the cross-sectional schematic diagram of the drainage tube in another embodiment of the present invention.

[0021] Reference numerals in the drawings: outer tube body 100; airbag space 101; drainage port 102; insertion end 110; indwelling end 120; inner tube body 200; airbag assembly 300; elastic airbag 310; connecting pipe 320; input pipe 330. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0023] In the description of the present invention, it should be understood that when it comes to orientation descriptions, such as upper, lower, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0024] In the description of the present invention, several means one or more, and a plurality means two or more. If there is a description of first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0026] Referring to Figures 1 to 4 As shown, an embodiment of the first aspect of the present invention provides a drainage tube, including: an outer tube body 100, an inner tube body 200, and an airbag assembly 300.

[0027] The outer tube body 100 includes an insertion end 110 and a retention end 120. The insertion end 110 is used to be inserted into the patient's body, and the retention end 120 is used to be retained outside the patient's body. In this embodiment, the outer tube body 100 has a relatively hard texture. When the drainage tube is inserted into the patient's body, the outer tube body 100 is not easily deformed, and medical staff can control the outer tube body 100 to move along a specified direction to insert the insertion end 110 into a specified position for drainage, making the operation of inserting the drainage tube by medical staff more convenient. It should be noted that the relatively hard texture of the outer tube body 100 does not mean that the outer tube body 100 cannot be deformed at all, but that the outer tube body 100 needs to be deformed under a certain acting force. The material of the outer tube body 100 is generally silicone, polyurethane, etc., and generally needs to have biocompatibility, flexibility, and corrosion resistance.

[0028] The flexible inner tube body 200 is disposed within the outer tube body 100. The inner tube body 200 is used for drainage. The inner tube body 200 is more prone to deformation compared to the outer tube body 100, such that the inner tube body 200 is easily deformed by the extrusion of the airbag assembly 300. One end of the inner tube body 200 is connected to the insertion end 110. An airbag space 101 is formed between the outer peripheral surface of the inner tube body 200 and the inner peripheral surface of the outer tube body 100. One end of the inner tube body 200 is integrally connected to the insertion end 110, such that body fluid is difficult to enter the airbag space 101, but mainly flows and is discharged within the inner tube body 200. The airbag assembly 300 will not be in direct contact with the body fluid, reducing the possibility of corrosion of the airbag assembly 300. And when the inner tube body 200 is detachably connected to the outer tube body 100, the outer tube body 100 can be reused after aseptic treatment, and only a new inner tube body 200 needs to be replaced.

[0029] The airbag assembly 300 is disposed within the airbag space 101 and includes a plurality of elastic airbags 310 that are sequentially communicated. The plurality of elastic airbags 310 are sequentially arranged along the axial direction of the outer tube body 100. One end of the plurality of elastic airbags 310 away from the insertion end 110 communicates with the outside. The pulse inflation assembly communicates with one end of the plurality of elastic airbags 310 away from the indwelling end 120. One end of the plurality of elastic airbags 310 away from the indwelling end 120 is used to communicate with the pulse inflation assembly. The pulsed air flow moves within the elastic airbag 310 in the direction from the insertion end 110 to the indwelling end 120, such that the plurality of elastic airbags 310 can perform a wave motion in the direction from the insertion end 110 to the indwelling end 120. The elastic airbag 310 squeezes the tube wall of the inner tube body 200, such that the inner tube body 200 also performs a wave motion through its own deformation, thereby pushing the body fluid within the inner tube body 200 to move in the direction from the insertion end 110 to the indwelling end 120. When there are blood clots in the body fluid, the blood clots are both pushed by the tube wall of the inner tube body 200 and squeezed by the tube wall of the inner tube body 200. The blood clots move in the direction from the insertion end 110 to the indwelling end 120 under the push of the inner tube body 200 and can also be broken by the extrusion of the tube wall of the inner tube body 200, reducing the possibility of blood clot blockage of the inner tube body 200.

[0030] Wherein, the airbag assembly 300 is configured such that, in the working state, pulsed air flow is filled into the airbag assembly 300, and the plurality of elastic airbags 310 sequentially expand and contract in the direction from the insertion end 110 to the indwelling end 120. The elastic airbags 310 alternately expand and contract to squeeze the inner tube body 200.

[0031] Wherein, the pulsed air flow refers to an air flow mode in which low-pressure air masses and high-pressure air masses are alternately ejected. Generally, the ejection frequency of the high-pressure air mass is used as the pulse frequency of the pulsed air flow. Wherein, the pulse frequency is basically consistent with the natural frequency of the elastic airbag 310, such that the elastic airbag 310 can resonate with the pulsed air flow, thereby increasing the expansion amplitude of the elastic airbag 310 and improving the expansion reliability of the elastic airbag 310.

[0032] Specifically, along the direction from the insertion end 110 to the indwelling end 120, a plurality of elastic air bags 310 are sequentially named the first air bag, the second air bag... the Nth air bag. When the pulsed air flow enters the first air bag from the end where the insertion end 110 is located, the low-pressure air mass causes the first air bag to slightly expand or not expand; after the low-pressure air mass enters the second air bag, the second air bag slightly expands or does not expand. At the same time, the high-pressure air mass enters the first air bag, and the first air bag will fully expand; after the high-pressure air mass enters the second air bag, another low-pressure air mass enters the first air bag, and the first air bag will retract by its own elastic force, and the second air bag expands under the influence of the high-pressure air mass; subsequent air bags will alternately repeat expansion and retraction, causing the elastic air bags 310 to form a wavy motion. Or rather, a plurality of elastic air bags 310 perform a "peristalsis" similar to that of the intestinal tract along the direction from the insertion end 110 to the indwelling end 120, thereby discharging the body fluid and blood clots within the inner tube body 200. It should be noted that it is also possible that the first air bag and the second air bag are simultaneously expanded by the high-pressure air mass, and the third air bag and the fourth air bag retract. As another implementation manner, it is also possible that all the elastic air bags 310 expand in sequence along the direction from the insertion end 110 to the indwelling end 120, all the elastic air bags 310 then retract in sequence along the direction from the insertion end 110 to the indwelling end 120, and all the elastic air bags 310 alternately expand and retract in sequence.

[0033] In addition, in this embodiment, the part of the drainage tube located outside the patient's body can also be connected to a negative pressure suction device, so that the part of the drainage tube located inside the patient's body discharges body fluid and blood clots through the "peristalsis" of a plurality of elastic air bags 310, while the part of the drainage tube located outside the patient's body is discharged through the negative pressure suction device, further improving the drainage efficiency of the drainage tube. It should be noted that the drainage tube can also discharge body fluid and blood clots only through a plurality of elastic air bags 310.

[0034] It is understandable that after the pulsed inflation assembly provides the pulsed air flow, a plurality of elastic air bags 310 will expand and retract in sequence, causing all the elastic air bags 310 to form a wavy motion, and all the elastic air bags 310 will squeeze the liquid within the inner tube body 200 along the direction from the insertion end 110 to the indwelling end 120, enabling the inner tube body 200 to "peristalsis" along the direction from the insertion end 110 to the indwelling end 120. The drainage tube has a stronger ability to discharge solid objects such as blood clots and a stronger anti-blocking ability; the air bag assembly 300 is close to the insertion end 110 of the outer tube body 100, so the air bag assembly 300 can penetrate deep into the patient's body and perform squeezing drainage within the patient's body to discharge the corresponding blood clots, reducing the occurrence of the situation where the drainage tube in the patient's body is blocked and needs to be replaced, reducing the risk of drainage tube blockage, and reducing the risks of infection and multiple surgeries for the patient, which is more conducive to the patient's recovery.

[0035] Refer to Figure 1, Figure 2 As shown in Figure 3 In some specific embodiments of the present invention, the airbag assembly 300 further includes a plurality of connecting pipes 320, and the connecting pipes 320 communicate between two adjacent elastic airbags 310.

[0036] It should be understood that the connecting pipes 320 are arranged between two adjacent elastic airbags 310 for air flow to pass through, and the connecting pipes 320 can form a certain resistance to the delivery of pulsed air flow, so that the pulsed air flow can stay in the elastic airbag 310 for a sufficient time, enabling the elastic airbag 310 to fully expand. Furthermore, the plurality of elastic airbags 310 expand in sequence, and there is a certain time difference in the expansion between the elastic airbags 310, which is more conducive to the sequential expansion of the plurality of elastic airbags 310.

[0037] In some specific embodiments of the present invention, the diameters of the plurality of connecting pipes 320 increase sequentially along the direction from the insertion end 110 to the retention end 120.

[0038] It should be understood that the intensity of the pulsed air flow is lower the farther it is from the insertion end 110. To ensure that the expansion and retraction times of the plurality of elastic airbags 310 are basically the same, the diameters of the connecting pipes 320 are increased sequentially, so that the pulsed air flow with reduced intensity is subjected to less resistance, and thus the time for the pulsed air flow to pass through each elastic airbag 310 is basically the same. All the elastic airbags 310 can perform regular wave-like movements, improving the movement consistency of the elastic airbags 310.

[0039] Referring to Figure 4 As shown in, in some specific embodiments of the present invention, one end of the inner tube body 200 is detachably connected to the insertion end 110, and the inner tube body 200 can be separated from the outer tube body 100. After use, only the inner tube body 200 needs to be replaced. After the outer tube body 100 and the airbag assembly 300 are cleaned and sterilized, they can be reused, reducing the use cost.

[0040] As another implementation manner, one end of the inner tube body 200 can also be integrally connected to the insertion end 110 of the outer tube body 100. After the drainage tube is used, the whole drainage tube is replaced at one time, effectively reducing the risk of cross-contamination.

[0041] It should be noted that the detachable connection in this embodiment means: a connection method in which the inner tube body 200 and the outer tube body 100 can be completely separated. When the inner tube body 200 and the outer tube body 100 are connected as a whole by means such as glue, as long as the inner tube body 200 and the outer tube body 100 can be completely separated, it still belongs to the detachable connection. For example, they are connected as a whole by glue, and then the glue is dissolved by a special chemical solvent to make the inner tube body 200 and the outer tube body 100 completely separated.

[0042] Referring toFigure 1 , Figure 2 As shown in Figure 4 , in some specific embodiments of the present invention, a plurality of elastic air bags 310 are spirally distributed along the inner circumferential surface of the outer tube body 100. The elastic air bags 310 can squeeze the inner tube body 200 along the spiral direction, so that the body fluid and blood clots in the inner tube body 200 can move spirally along the spiral direction. The blood clots will move in a continuous spiral shape, and the movement of the blood clots is smoother, which can effectively improve the conveying efficiency of the blood clots.

[0043] Referring to Figure 1 and Figure 2 , in some specific embodiments of the present invention, a plurality of elastic air bags 310 are sequentially distributed along the axial direction of the outer tube body 100. The elastic air bags 310 will directly squeeze and convey the blood clots along the axial direction of the outer tube body 100 to achieve the conveyance of the blood clots.

[0044] Referring to Figure 1 and Figure 2 , in some specific embodiments of the present invention, the outer tube body 100 has a drainage port 102 at the insertion end 110. The drainage port 102 communicates with the side wall of the outer tube body 100 and / or one end of the outer tube body 100. The drainage port 102 is used for body fluid to enter the inner tube body 200.

[0045] In this embodiment, the outer tube body 100 includes a plurality of drainage ports 102. One drainage port 102 communicates with one end of the outer tube body 100, and the other drainage port 102 communicates with the side wall of the outer tube body 100. When the drainage port 102 at the end directly abuts against human tissue, the drainage tube can still suck body fluid through the drainage port 102 on the side wall, so that the drainage tube is not easily blocked as a whole due to the blockage of a single drainage port 102.

[0046] Referring to Figure 1 and Figure 2 , in some specific embodiments of the present invention, the drainage tube includes: a plurality of groups of air bag assemblies 300. The plurality of groups of air bag assemblies 300 are sequentially distributed around the circumference of the inner tube body 200. The plurality of groups of air bag assemblies 300 jointly squeeze the inner tube body 200 to effectively prevent the inner tube body 200 from being blocked by blood clots.

[0047] In this embodiment, the contour shape of each air bag assembly 300 is a fan-shaped column. The plurality of air bag assemblies 300 surround and form an annular column, so that the air bag assemblies 300 can completely fill the air bag space 101 between the inner tube body 200 and the outer tube body 100. The strength of the overall tube wall of the drainage tube is higher, and the air bag assemblies 300 are in full contact with the tube wall of the inner tube body 200, effectively improving the squeezing effect of the air bag assemblies 300 on the inner tube body 200.

[0048] Referring to Figure 1 and Figure 2As shown, in some specific embodiments of the present invention, the elastic airbags 310 in multiple airbag assemblies 300 are arranged in sequence with a stagger along the axial direction of the inner tube body 200.

[0049] It should be noted that the elastic airbags 310 in the same airbag assembly 300 are communicated through a connecting pipe 320. It is difficult to squeeze the inner tube body 200 in the area where the connecting pipe 320 is located, which makes it difficult for the inner tube body 200 to form a complete and continuous wave-like conveyance.

[0050] It is understandable that through the staggered arrangement of multiple groups of airbag assemblies 300, the area where the connecting pipe 320 in one airbag assembly 300 is located is exactly filled by the elastic airbags 310 of other airbag assemblies 300. As a result, the inner tube body 200 can form a complete and continuous wave-like conveyance, improving the conveyance effect of body fluid and blood clots within the inner tube body 200. Moreover, multiple groups of airbag assemblies 300 are staggered in sequence along the circumferential direction of the inner tube body 200, making multiple groups of airbag assemblies 300 spirally staggered. The elastic airbags 310 in all airbag assemblies 300 are distributed in a spiral shape along the circumferential direction of the inner tube body 200, thereby improving the discharge effect of the inner tube body 200 on solid substances such as blood clots.

[0051] In this embodiment, the drainage tube includes six groups of airbag assemblies 300. The length of the connecting pipe 320 is the same as that of five elastic airbags 310. The connecting pipe 320 in one group of airbag assemblies 300 will be exactly filled by one elastic airbag 310 in other five groups of airbag assemblies 300 in sequence along the axial direction of the inner tube body 200. And the elastic airbags 310 of the other five groups of airbag assemblies 300 are staggered in sequence along the circumferential direction of the inner tube body 200 to form a spiral distribution.

[0052] Refer to Figure 1 、 Figure 2 And Figure 3 As shown, in some specific embodiments of the present invention, the airbag assembly 300 further includes an input pipe 330. The input pipe 330 is arranged along the axial direction of the inner tube body 200 and is arranged in sequence with multiple elastic airbags 310 along the circumferential direction of the inner tube body 200. One end of the input pipe 330 is communicated with the end of multiple elastic airbags 310 away from the indwelling end 120.

[0053] In this embodiment, the input pipe 330 and multiple elastic airbags 310 are both arranged along the axial direction of the inner tube body 200. The outer contour of the input pipe 330 is in the shape of a sector column, and the overall contour formed by all elastic airbags 310 is also in the shape of a sector column. The input pipe 330 and all elastic airbags 310 are arranged adjacent to each other along the axial direction of the inner tube body 200, and the overall shape after their splicing is also in the shape of a sector column to fill the airbag space 101 between the inner tube body 200 and the outer tube body 100, making the overall dimensions of the inner tube body 200 and the outer tube body 100 more compact.

[0054] Referring to Figure 5 as shown, an embodiment of the second aspect of the present invention provides a drainage tube, including: an outer tube body 100, an airbag assembly 300, and a pulsed inflation assembly. The outer tube body 100 includes an insertion end 110 and a retention end 120. The insertion end 110 is for inserting into a patient's body, and the retention end 120 is for retaining outside the patient's body; the airbag assembly 300 is disposed on the inner peripheral surface of the outer tube body 100. The airbag assembly 300 includes a plurality of elastic airbags 310 that are sequentially communicated. The plurality of elastic airbags 310 are sequentially arranged along the axial direction of the outer tube body 100. One end of the plurality of elastic airbags 310 away from the insertion end 110 is communicated with the outside; the pulsed inflation assembly is communicated with one end of the plurality of elastic airbags 310 away from the retention end 120; wherein, the airbag assembly 300 is configured to: in the working state, pulsed air flows into the airbag assembly 300, and the plurality of elastic airbags 310 sequentially expand and retract along the direction from the insertion end 110 to the retention end 120, and the elastic airbags 310 alternately expand and retract.

[0055] In this embodiment, the body fluid and blood clots are directly squeezed by the airbag assembly 300, so that the overall wall thickness of the drainage tube is thinner, effectively reducing the overall size of the drainage tube and facilitating the intubation operation of medical staff.

[0056] It should be understood that after the pulsed inflation assembly provides pulsed air flow, the plurality of elastic airbags 310 will sequentially expand and retract, so that all the elastic airbags 310 form a wave-like motion, and all the elastic airbags 310 will squeeze the liquid inside the outer tube body 100 along the direction from the insertion end 110 to the retention end 120. The elastic airbags 310 can "creep" along the direction from the insertion end 110 to the retention end 120. The drainage tube has a stronger ability to discharge solid objects such as blood clots and a stronger anti-blocking ability; the airbag assembly 300 is close to the insertion end 110 of the outer tube body 100, so the airbag assembly 300 can penetrate deep into the patient's body and perform squeezing drainage in the patient's body to discharge the corresponding blood clots, reducing the situation where the drainage tube in the patient's body is blocked and only the drainage tube can be replaced, reducing the risk of drainage tube blockage, and reducing the risk of multiple surgeries for the patient, which is more beneficial to the patient's recovery.

[0057] In a third aspect embodiment of the present invention, a drainage tube is proposed, which includes an outer tube body 100 and an airbag assembly 300. The outer tube body 100 includes an insertion end 110 and a retention end 120. The insertion end 110 is used to be inserted into a patient's body, and the retention end 120 is used to be retained outside the patient's body. The airbag assembly 300 is arranged on the inner circumferential surface of the outer tube body 100. The airbag assembly 300 includes a plurality of elastic airbags 310 arranged at intervals in sequence and a plurality of communication pipes. The plurality of elastic airbags 310 are arranged in sequence along the axial direction of the outer tube body 100, and the communication pipes are respectively communicated with at least one elastic airbag 310. Wherein, the airbag assembly 300 is configured to: in the working state, along the direction from the insertion end 110 to the retention end 120, all the elastic airbags 310 expand and retract in sequence, and the elastic airbags 310 expand and retract alternately.

[0058] In this embodiment, an inflation source is communicated with all the communication pipes. The number of inflation sources can be one, but it is communicated with all the communication pipes through a multi-way valve, and the inflation source is communicated with different communication pipes through the multi-way valve. Or a plurality of inflation sources are provided, and each inflation source is communicated with one communication pipe.

[0059] Wherein, along the direction from the insertion end 110 to the retention end 120, all adjacent elastic airbags 310 are divided into multiple airbag groups according to the number of communication pipes. Among them, one communication pipe is connected to one elastic airbag 310 in each airbag group, and the order of the elastic airbags 310 in each airbag group is the same. For example, along the direction from the insertion end 110 to the retention end 120, the elastic airbags 310 in each airbag group are numbered starting from one. When a communication pipe is connected to the elastic airbag 310 numbered one in an airbag group, then this communication pipe is connected to the elastic airbags 310 numbered one in each airbag group.

[0060] Specifically, the number of connecting pipes is three, the number of inflation sources is one, and the number of valves controlled by the multi-way valve is four, among which one is kept normally open and connected to the inflation source, and the other three are connected to three connecting pipes respectively, and the connection between the inflation source and one connecting pipe is controlled by the multi-way valve. Among them, the number of elastic airbags 310 is multiple, and the number of elastic airbags 310 can be a multiple of the number of connecting pipes, for example, the number of elastic airbags 310 is thirty, which are distributed in sequence from the insertion end 110 to the retention end 120, and starting from the insertion end 110, every three adjacent elastic airbags 310 are grouped into ten airbag groups, and an elastic airbag 310 away from the retention end 120 in each airbag group is connected to the same connecting pipe, and an elastic airbag 310 away from the insertion end 110 in each airbag group is commonly connected to another connecting pipe, and the elastic airbag 310 located in the middle of each airbag group is connected to the last connecting pipe. During use, the three connecting pipes are connected to the inflation source in sequence according to the connection order between the connecting pipes and the elastic airbags 310 in each airbag group along the direction from the insertion end 110 to the retention end 120, so that the elastic airbags 310 in each airbag group expand in sequence along the direction from the insertion end 110 to the retention end 120, and shrink in sequence after expansion.

[0061] For example, the six elastic airbags 310 in the two airbag groups are A, B, C, D, E, and F respectively along the direction from the insertion end 110 to the retention end 120. The first communication channel is connected to A and D, the second communication channel is connected to B and E, and the third communication channel is connected to C and F. The inflation source is connected to the first communication channel, the second communication channel, and the third communication channel in sequence, so that A and D expand first, B and E expand second, and C and F expand last, so that all elastic airbags 310 expand. The inflation source is connected to the first communication channel, the second communication channel, and the third communication channel again, so that A and D shrink first, B and E shrink second, and C and F shrink last. Among them, the shrinkage of A and D and the expansion of C and F can occur simultaneously. In other words, A and D expand first, B and E expand second, and C and F expand last (simultaneous shrinkage of A and D), B and E shrink second, and C and F shrink last (simultaneous expansion of A and D).

[0062] It should be understood that in the working state, all the elastic air bags 310 form a wavy motion, and all the elastic air bags 310 will squeeze the liquid inside the outer tube body 100 in the direction from the insertion end 110 to the indwelling end 120. The elastic air bags 310 can "peristalsis" in the direction from the insertion end 110 to the indwelling end 120. The drainage tube has a stronger ability to discharge solid objects such as blood clots and a stronger anti-blocking ability; the air bag assembly 300 is close to the insertion end 110 of the outer tube body 100, so the air bag assembly 300 can penetrate deep into the patient's body and perform extrusion drainage in the patient's body to discharge the corresponding blood clots, reducing the situation where the drainage tube in the patient's body is blocked and only the drainage tube can be replaced, reducing the risk of drainage tube blockage, and reducing the risk of multiple surgeries for the patient, which is more conducive to the patient's recovery.

[0063] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A drainage tube, characterized in that: include: The outer tube body comprises an insertion end and a retention end, wherein the insertion end is used to be inserted into the patient's body, and the retention end is used to be retained outside the patient's body; A flexible inner tube body is arranged inside the outer tube body, one end of the inner tube body is connected to the insertion end, and an airbag space is formed between the outer circumference of the inner tube body and the inner circumference of the outer tube body; An airbag assembly is arranged in the airbag space and includes a plurality of elastic airbags connected in sequence. The plurality of elastic airbags are arranged in sequence along the axial direction of the outer tube body. One end of the plurality of elastic airbags away from the insertion end is connected to the outside world, and one end of the plurality of elastic airbags away from the retention end is used to connect to the pulse inflation assembly; Wherein, the airbag assembly is configured as follows: in a working state, a pulse airflow is filled into the airbag assembly, and the multiple elastic airbags expand and contract in sequence along the direction from the insertion end to the retention end, and the elastic airbags expand and contract alternately to squeeze the inner tube body.

2. The drainage tube according to claim 1, characterized in that: The airbag assembly also includes a plurality of connecting pipes, and the connecting pipes are connected between two adjacent elastic airbags.

3. The drainage tube according to claim 2, characterized in that: The diameters of the plurality of connecting pipes increase sequentially along the direction from the insertion end to the retention end.

4. The drainage tube according to claim 1, characterized in that: One end of the inner tube body is detachably connected to the insertion end.

5. The drainage tube according to claim 1, characterized in that: The plurality of elastic airbags are spirally distributed along the inner circumference of the outer tube; Alternatively, the plurality of elastic airbags are distributed in sequence along the axial direction of the outer tube.

6. The drainage tube according to claim 1, characterized in that: The outer tube body has a drainage port at the insertion end, and the drainage port is connected to the side wall of the outer tube body and / or one end of the outer tube body.

7. The drainage tube according to claim 1, characterized in that: include: A plurality of groups of the airbag components are sequentially distributed around the circumference of the inner tube body.

8. The drainage tube according to claim 7, characterized in that: The elastic airbags in the plurality of airbag assemblies are staggered in sequence along the axial direction of the inner tube body.

9. A drainage tube, characterized in that: include: The outer tube body comprises an insertion end and a retention end, wherein the insertion end is used to be inserted into the patient's body, and the retention end is used to be retained outside the patient's body; An airbag assembly is arranged on the inner circumference of the outer tube body, and the airbag assembly includes a plurality of elastic airbags connected in sequence. The plurality of elastic airbags are arranged in sequence along the axial direction of the outer tube body, and one end of the plurality of elastic airbags away from the insertion end is connected to the outside world, and one end of the plurality of elastic airbags away from the retention end is used to connect to the pulse inflation assembly; Wherein, the airbag assembly is configured as follows: in a working state, a pulse airflow is filled into the airbag assembly, and the plurality of elastic airbags expand and contract in sequence along the direction from the insertion end to the retention end, and the elastic airbags expand and contract alternately.

10. A drainage tube, characterized in that: include: The outer tube body comprises an insertion end and a retention end, wherein the insertion end is used to be inserted into the patient's body, and the retention end is used to be retained outside the patient's body; An airbag assembly is arranged on the inner circumference of the outer tube body, the airbag assembly includes a plurality of elastic airbags arranged in sequence and a plurality of connecting pipes, the plurality of elastic airbags are arranged in sequence along the axial direction of the outer tube body, and the connecting pipes are respectively connected to at least one of the elastic airbags; Wherein, the airbag assembly is configured as follows: in a working state, along the direction from the insertion end to the retention end, all the elastic airbags expand and shrink in sequence, and the elastic airbags expand and shrink alternately.

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