An airbag for securement of a drainage tube and a drainage tube

Abstract

This invention relates to the field of medical device technology, specifically to a cuff and drainage tube for fixing a drainage tube. The cuff includes a support member, a first cuff, and a second cuff. The first cuff is located inside the support member, and the second cuff is located outside the support member. The first cuff is disposed along the inner wall of the support member and is used to fit over the drainage tube. When inflated, the first cuff compresses the drainage tube, fixing it relative to the cuff. The second cuff includes a second internal cuff and a second external cuff. The second internal cuff is located on the support member near the internal end, and the second external cuff is located on the support member near the external end. When inflated, the second internal and external cuffs are used to lock into the two ends of the tissue cavity to prevent the cuff from loosening relative to the tissue cavity. The cuff of this application, while facilitating adjustment of the positional relationship between the cuff and the drainage tube, also improves the stability of the fit between the cuff and the tissue cavity.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an airbag and drainage tube for fixing a drainage tube. Background Technology

[0002] A drainage tube is a medical device used to guide pus, blood, or fluid accumulated between body tissues or in body cavities to the outside of the body to prevent postoperative infection and promote wound healing. Currently, drainage tubes are usually fixed to the patient's skin using sutures. Although this suturing method can improve the stability of the drainage tube, it increases patient pain and can easily irritate the skin.

[0003] Furthermore, there is a sutureless fixation method. Typically, an air balloon is placed on the drainage tube. After inflation, the balloon engages with the cavity to limit the drainage tube's position and prevent it from dislodging. While this sutureless method reduces irritation to the patient's wound, the inventors have found that current sutureless drainage tubes still have shortcomings in practical use, specifically: For some drainage tubes, the airbag is fixed to the drainage tube. Although this can improve the stability of the relative position between the airbag and the drainage tube, it is not easy to adjust the length of the drainage tube when it is inserted into the human body. The length of insertion often depends on the position of the airbag on the drainage tube, which makes the adjustment of the depth of the drainage tube in the human body inflexible. Different types of drainage tubes are usually required to meet the needs of different people. The difference between the two types is reflected in the position of the airbag on the drainage tube. There are also some drainage tubes with airbags that can be slidably mounted on them. When fixing the drainage tube, the airbag is inflated, and the airbag simultaneously compresses the cavity wall and the drainage tube to achieve the purpose of fixing the drainage tube. However, when it is necessary to adjust the length of the drainage tube, the airbag usually needs to be deflated to reduce the compression force of the airbag on the drainage tube and facilitate the movement of the drainage tube relative to the airbag. However, in this process, the pressure of the airbag on the cavity wall and the drainage tube will be weakened, which is not conducive to the fixation of the airbag relative to the cavity wall and is prone to displacement of the airbag relative to the cavity wall, which is not conducive to the cooperation between the airbag and the tissue cavity.

[0004] Therefore, based on the above shortcomings, there is an urgent need to design an airbag and drainage tube for fixing the drainage tube, which can facilitate the adjustment of the positional relationship between the airbag and the drainage tube, and also improve the stability of the fit between the airbag and the tissue cavity during the adjustment process. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned shortcomings of current sutureless drainage tubes in practical use by providing a balloon and drainage tube that facilitates adjustment of the positional relationship between the balloon and the drainage tube, while also improving the stability of the fit between the balloon and the tissue cavity during the adjustment process.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: An airbag for fixing a drainage tube includes a support member, a first airbag, and a second airbag. The support member has a cylindrical structure. The first airbag is located inside the support member, and the second airbag is located outside the support member. Both the first and second airbags can be inflated and deflated independently and are elastic. The first airbag is disposed along the inner wall of the support member. The first airbag is annular and is used to be sleeved on the drainage tube. After the first airbag is inflated, it can compress the drainage tube to fix the drainage tube relative to the airbag. The end of the support member that extends into the body is the internal end, and the end of the support member that extends out of the body is the external end. The second airbag includes a second internal airbag and a second external airbag. The second internal airbag is located on the support member near the internal end, and the second external airbag is located on the support member near the external end. Both the second internal airbag and the second external airbag are annular structures adapted to the support member. Both the second internal airbag and the second external airbag can be inflated and deflated independently. After inflation, the second internal airbag and the second external airbag are used to lock at both ends of the tissue cavity to prevent the airbag from loosening relative to the tissue cavity.

[0007] As the preferred technical solution of this application, the support includes a first support and a second support, the second support is sleeved on the first support, both the first support and the second support are cylindrical structures, the second internal airbag is disposed on the first support, and the second external airbag is disposed on the second support. The second support member can move relative to the first support member along its central axis to change the distance between the second internal airbag and the second external airbag. An elastic member is provided between the first support member and the second support member. The elastic member is elastic and its deformation gradually increases as the distance between the second internal airbag and the second external airbag gradually increases.

[0008] As the preferred technical solution of this application, a groove is formed on the first support member, the groove is adapted to the second support member, the second support member can slide along the groove, the elastic member is located in the groove, one end of the elastic member is connected to the first support member, and the other end of the elastic member is connected to the second support member.

[0009] As the preferred technical solution of this application, the first support member is provided with a first fixing area, and the second support member is provided with a second fixing area. Both the first fixing area and the second fixing area are annular, and both the first fixing area and the second fixing area are fixed to the outer wall of the first airbag.

[0010] As a preferred technical solution of this application, the second support member includes an annular portion and a strip portion. The annular portion is an annular structure adapted to the groove and is connected to the elastic member. The strip portion is a strip-shaped structure, and there are several strip portions. The strip portions are disposed at the ends of the annular portion, and the several strip portions are arranged along the circumference of the annular portion. The length direction of the strip portion is in the same direction as the central axis direction of the annular portion. The second external airbag is connected to the side of the strip portion opposite to the central axis of the first support member; The strip-shaped portion is elastic, and when the airbag mates with the tissue cavity, the strip-shaped portion extends out of the groove and bends toward the central axis of the first support member.

[0011] As a preferred technical solution of this application, the second fixing area is located on the end of the second support member away from the first support member, and / or the first fixing area is located on the end of the first support member close to the second support member.

[0012] As a preferred technical solution of this application, the first support member is provided with an adjustment component, and the first support member is connected to the elastic member through the adjustment component. The adjustment component is used to adjust the position of the end of the elastic member that cooperates with the first support member in the groove along the length direction of the groove.

[0013] As the preferred technical solution of this application, the adjusting component includes a stop block and an adjusting ring. The first support member is provided with a guide groove, which is adapted to the stop block. The stop block is connected to the elastic member and can slide along the guide groove. The length direction of the guide groove is the same as the length direction of the sliding groove. The adjusting ring is provided on the outer wall of the first support member and is threadedly connected to the first support member. The adjusting ring is provided with a limiting groove adapted to the stop block. By rotating the adjusting ring relative to the first support member, the adjusting ring moves relative to the first support member along the length direction of the first support member, and the limiting groove slides relative to the abutment, so that the abutment slides along the length direction of the groove.

[0014] As the preferred technical solution of this application, both the first airbag and the second airbag are connected to an air tube, which is used to inflate or deflate the corresponding first airbag or second airbag.

[0015] The present invention also provides a drainage tube, including the above-mentioned airbag, and a drainage tube body, wherein the airbag is used to be sleeved on the drainage tube body.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the scheme of this application, by setting a first airbag and a second airbag, and placing the first airbag inside the support member and the second airbag outside the support member, the support member has a certain supporting strength. When the first airbag is inflated, the inflated first airbag squeezes the drainage tube, fixing the squeezed drainage tube relative to the airbag. At the same time, when the second airbag is inflated, by inflating the second internal airbag and the second external airbag, the inflated second internal airbag and the second external airbag can be locked at both ends of the tissue cavity, thereby preventing the airbag from loosening relative to the tissue cavity. Furthermore, the first airbag, the second internal airbag, and the second external airbag can all be used independently. Inflating and deflating the first airbag maintains a constant gas content within the second airbag while adjusting its position relative to the drainage tube, thus keeping the position of the second airbag and the tissue cavity relatively fixed. Deflating the first airbag reduces its gas content, thereby decreasing the pressure exerted on the drainage tube and facilitating the movement of the drainage tube relative to the airbag. This makes it easier to adjust the positional relationship between the airbag and the drainage tube, and also improves the stability of the fit between the airbag and the tissue cavity. Furthermore, the ability to flexibly adjust the positional relationship between the drainage tube and the airbag, as well as between the airbag and the tissue cavity, further enhances the convenience for medical staff using the airbag. 2. Furthermore, by setting a first support member and a second support member, the second support member can move relative to the first support member along its central axis, thereby adjusting the distance between the second internal airbag and the second external airbag. Specifically, during the process of fixing the second airbag to the tissue cavity, by increasing the gas content in the second internal airbag and the second external airbag, the second airbag gradually expands and is locked at both ends of the tissue cavity. Since the second support member can move relative to the first support member, the distance between the second internal airbag and the second external airbag is adjustable, so that the airbag is suitable for tissues of different thicknesses, i.e., suitable for tissue cavities of different lengths. At the same time, when the deformation of the elastic member increases, the elastic force provided by the elastic member facilitates the compression of the tissue by the second internal airbag and the second external airbag along the central axis of the support member, further improving the stability of the fit between the airbag and the tissue cavity. Furthermore, after the airbag, tissue cavity, and drainage tube are stably fitted together, in the event of accidental pulling of the drainage tube, the first support member can move relative to the second support member, which easily causes the elastic member to deform. This causes the first support member to move relative to the second support member, increasing the distance between the second internal airbag and the second external airbag. The compression force of the second internal airbag and the second external airbag on the tissue changes, resulting in a greater compression force from the second internal airbag and a smaller compression force from the second external airbag. When there is no external force pulling the drainage tube, the elastic member can easily restore the airbag and tissue cavity to a stable fitted state under the action of restoring deformation. In this way, the impact of accidental pulling of the drainage tube on the fit between the airbag and the tissue cavity can be reduced, improving the stability of the fit between the airbag and the tissue cavity and providing a buffer space for the eventual pulling of the drainage tube. 3. Furthermore, the entire process of coordinating the balloon with the tissue cavity and drainage tube can be divided into three stages. In the first stage, the balloon is coordinated with the drainage tube, and medical staff operate externally by inflating the first balloon to provide greater compression force, thereby limiting the drainage tube. In the second stage, the balloon is coordinated with the tissue cavity by inflating the second internal and second external balloons. Under the action of the second balloon, the balloon is fixed relative to the tissue cavity. In this stage, the distance between the first and second fixation areas increases, reducing the compression force of the first balloon on the drainage tube. Thus, with the balloon fixed relative to the tissue cavity... This allows the drainage tube to move relative to the airbag, facilitating adjustment of its elongation. In the third stage, the first airbag is inflated again, increasing its pressure on the drainage tube and fixing it in place. This completes the entire process. After the first stage, when the drainage tube and the second internal airbag are inserted into the tissue cavity, the relative position of the drainage tube and the airbag is ensured, facilitating the insertion of the second internal airbag into the tissue cavity. Furthermore, in the third stage, inflating the first airbag to achieve the same pressure as in the first stage increases the contact area between the first airbag and the drainage tube, further enhancing the stability of their relative position. 4. Furthermore, by setting an annular portion and a strip portion, the annular portion is adapted to the groove, thereby improving the stability of the movement of the second support relative to the first support. At the same time, the second external airbag is connected to the strip portion, so that during the process of the airbag engaging with the tissue cavity, when the second internal airbag and the second external airbag are inflated, the second support can move relative to the first support, causing the strip portion to gradually extend out of the groove and gradually bend towards the central axis of the first support. This makes the end of the second support away from the first support a constricted shape. After the first airbag is inflated and squeezes the drainage tube, the end of the second support away from the first support gradually constricts, which can squeeze the first airbag and easily squeeze the first airbag towards the body. Thus, during the stage of engaging the airbag with the tissue cavity, the drainage tube squeezed by the first airbag has a tendency or movement towards the body. During this stage, the stability of the drainage tube inserted into the body can be further ensured, and the drainage tube can be prevented from dislodging during the placement of the drainage tube in the human body. Meanwhile, after the end of the second support member away from the first support member is tapered, when the drainage tube is pulled, the drainage tube drives the first airbag to move, causing the first airbag to move towards the outside. Its tapered structure can constrain the movement of the first airbag, strengthen the squeezing force of the first airbag on the drainage tube, and further improve the stability of the drainage tube and the first airbag. Moreover, when the external force is released, the first airbag can gradually recover its deformation, which can reduce the squeezing force of the first airbag on the drainage tube. In this way, the drainage tube adapted to the airbag of this application can be improved to resist the risk of accidental pulling of the drainage tube during use, and the safety of the airbag and the adapted drainage tube of this application is improved. Attached image description: Figure 1 This is a schematic diagram of one embodiment of an airbag for fixing a drainage tube according to this application; Figure 2 This is a schematic diagram of the structure of an airbag for fixing a drainage tube according to one embodiment of the present application, when the airbag is combined with a tissue cavity; Figure 3 This is a partial structural diagram of the first airbag in one embodiment of an airbag for fixing a drainage tube according to this application. Figure 4 This is a schematic diagram of the structure located at the adjustment component in one embodiment of an airbag for fixing a drainage tube according to this application; Figure 5 This is a schematic diagram of the structure located at the adjustment ring in one embodiment of an airbag for fixing a drainage tube according to this application; Figure 6This is a partial structural diagram of the strip portion of an airbag for fixing a drainage tube, as shown in one embodiment of the present application, before and after bending. Figure 7 This is a schematic diagram of one embodiment of a drainage tube according to this application; The diagram shows: 1-Support component, 2-First airbag, 3-Second airbag, 4-Inner end, 5-Outer end, 6-Second inner airbag, 7-Second outer airbag, 8-First support component, 9-Second support component, 10-Elastic component, 11-Slide groove, 12-First fixing area, 13-Second fixing area, 14-Annular part, 15-Strip part, 16-Strip deformable part, 17-Strip constrained part, 18-Adjusting component, 19-Block, 20-Adjusting ring, 21-Guide groove, 22-Limiting groove, 23-Air tube, 24-Drainage tube body. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Example 1 This embodiment provides an airbag for fixing a drainage tube, see [link to relevant documentation]. Figures 1-5 As shown, it includes a support member 1, a first airbag 2 and a second airbag 3. The support member 1 has a cylindrical structure. The first airbag 2 is located inside the support member 1, and the second airbag 3 is located outside the support member 1. Both the first airbag 2 and the second airbag 3 can be inflated and deflated independently and are elastic. The first airbag 2 is arranged along the inner wall of the support member 1. The first airbag 2 is annular. The airbag is used to be sleeved on the drainage tube. After the first airbag 2 is inflated, it can squeeze the drainage tube to fix the drainage tube relative to the airbag. The end of the support member 1 that extends into the body is the inner end 4, and the end of the support member 1 that extends out of the body is the outer end 5. The second airbag 3 includes a second inner airbag 6 and a second outer airbag 7. The second inner airbag 6 is located on the support member 1 near the inner end 4, and the second outer airbag 7 is located on the support member 1 near the outer end 5. Both the second inner airbag 6 and the second outer airbag 7 are annular structures adapted to the support member 1. Both the second inner airbag 6 and the second outer airbag 7 can be inflated and deflated independently. After being inflated, the second inner airbag 6 and the second outer airbag 7 are used to lock at both ends of the tissue cavity to prevent the airbag from loosening relative to the tissue cavity.

[0023] In this application, by setting a first airbag 2 and a second airbag 3, and placing the first airbag 2 inside the support member 1 and the second airbag 3 outside the support member 1, the support member 1 has a certain supporting strength. When the first airbag 2 is inflated, the inflated first airbag 2 squeezes the drainage tube, fixing the squeezed drainage tube relative to the airbag. At the same time, when the second airbag 3 is inflated, the second internal airbag 6 and the second external airbag 7 are inflated, so that the inflated second internal airbag 6 and the second external airbag 7 can be locked at both ends of the tissue cavity, thereby preventing the airbags from loosening relative to the tissue cavity. Furthermore, the first airbag 2, the second internal airbag 6, and the second external airbag are all in good working order. All 7 units can be inflated and deflated independently. When adjusting the positional relationship between the airbag and the drainage tube, the gas content in the second airbag 3 remains constant, keeping the position of the second airbag 3 and the tissue cavity relatively fixed. By deflating the first airbag 2, the gas content in the first airbag 2 is reduced, thereby reducing the squeezing force of the first airbag 2 on the drainage tube. This facilitates the movement of the drainage tube relative to the airbag and makes it easier to adjust the positional relationship between the airbag and the drainage tube. In this process, the stability of the fit between the airbag and the tissue cavity is improved. At the same time, the positional relationship between the drainage tube and the airbag, as well as the positional relationship between the airbag and the tissue cavity, can be flexibly adjusted, further improving the convenience for medical staff to use the airbag.

[0024] As the preferred technical solution of this application, the support member 1 includes a first support member 8 and a second support member 9. The second support member 9 is sleeved on the first support member 8. Both the first support member 8 and the second support member 9 have a cylindrical structure. The second internal airbag 6 is disposed on the first support member 8, and the second external airbag 7 is disposed on the second support member 9. The second support member 9 can move relative to the first support member 8 along its central axis to change the distance between the second internal airbag 6 and the second external airbag 7. An elastic member 10 is provided between the first support member 8 and the second support member 9. The elastic member 10 is elastic and its deformation gradually increases as the distance between the second internal airbag 6 and the second external airbag 7 gradually increases.

[0025] Furthermore, by setting a first support member 8 and a second support member 9, the second support member 9 can move relative to the first support member 8 along its central axis, thereby adjusting the distance between the second internal airbag and the second external airbag 7. Specifically, during the process of fixing the second airbag 3 to the tissue cavity, by increasing the gas content in the second internal airbag 6 and the second external airbag 7, the second airbag 3 gradually expands and is stuck at both ends of the tissue cavity. Since the second support member 9 can move relative to the first support member 8, the distance between the second internal airbag 6 and the second external airbag 7 is adjustable, so that the airbag is suitable for tissues of different thicknesses, that is, for tissue cavities of different lengths. At the same time, when the deformation of the elastic member 10 increases, the elastic force provided by the elastic member 10 facilitates the compression of the tissue by the second internal airbag 6 and the second external airbag 7 along the central axis of the support member 1, further improving the stability of the fit between the airbag and the tissue cavity. Furthermore, after the airbag, tissue cavity, and drainage tube are stably coordinated, in the event of accidental pulling of the drainage tube, the first support member 8 can move relative to the second support member 9, which easily causes the elastic member 10 to deform. This causes the first support member 8 to move relative to the second support member 9, increasing the distance between the second internal airbag 6 and the second external airbag 7. The compression force of the second internal airbag 6 and the second external airbag 7 on the tissue changes, resulting in a greater compression force from the second internal airbag 6 and a smaller compression force from the second external airbag 7. When there is no external force pulling the drainage tube, the elastic member 10 can easily restore the airbag and tissue cavity to a stable coordinated state under the effect of its deformation. In this way, the impact of accidental pulling of the drainage tube on the coordination of the airbag and tissue cavity can be reduced, improving the stability of the coordination between the airbag and the tissue cavity and providing a buffer space for accidental pulling of the drainage tube.

[0026] As the preferred technical solution of this application, a groove 11 is formed on the first support member 8, the groove 11 is adapted to the second support member 9, the second support member 9 can slide along the groove 11, the elastic member 10 is located in the groove 11, one end of the elastic member 10 is connected to the first support member 8, and the other end of the elastic member 10 is connected to the second support member 9.

[0027] Furthermore, by setting the slide groove 11 and placing the elastic element 10 in the slide groove 11, the stability of the movement of the first support 8 relative to the second support 9 is improved, as is the stability of the elastic element 10 cooperating with the first support 8 and the second support 9.

[0028] As the preferred technical solution of this application, the first support member 8 is provided with a first fixing area 12, and the second support member 9 is provided with a second fixing area 13. The first fixing area 12 and the second fixing area 13 are both annular, and the first fixing area 12 and the second fixing area 13 are both fixed to the outer wall of the first airbag 2.

[0029] Furthermore, by setting up a first fixing area 12 and a second fixing area 13 in an annular shape, and fixing both the first fixing area 12 and the second fixing area 13 to the outer wall of the first airbag 2, the distance between the first fixing area 12 and the second fixing area 13 changes when the first support member 8 moves relative to the second support member 9 along its central axis, thereby changing the shape of the first airbag 2. Specifically, when the airbag is not engaged with the tissue cavity and drainage tube, the distance between the second internal airbag 6 and the second external airbag 7 is relatively close under the elastic force of the elastic element 10. Then, by inflating the first airbag 2 and engaging it with the drainage tube, the first airbag 2 compresses the drainage tube, making the first airbag 2 cylindrical. The first fixing area 12 and / or the second fixing area 13 are located in the middle of the cylindrical structure formed by the first airbag 2, meaning the distance between the first fixing area 12 and the second fixing area 13 is less than the height of the cylindrical structure formed by the first airbag 2. Next, when engaging the airbag with the tissue cavity, as the second internal airbag 6 and the second external airbag 7 are gradually inflated, the deformation of the elastic element 10 gradually increases, and the first support member 8 moves relative to the second support member 9, increasing the distance between the first fixing area 12 and the second fixing area 13. This weakens the squeezing force of the first airbag 2 on the drainage tube. Thus, the entire process of coordinating the balloon with the tissue cavity and drainage tube can be divided into three stages. In the first stage, the balloon is coordinated with the drainage tube, and medical staff operate externally by inflating the first balloon 2 to provide greater compression force, thereby limiting the drainage tube. In the second stage, the balloon is coordinated with the tissue cavity by inflating the second internal balloon 6 and the second external balloon 7. Under the action of the second balloon 3, the balloon is fixed relative to the tissue cavity. In this stage, the distance between the first fixation area 12 and the second fixation area 13 increases, reducing the compression force of the first balloon 2 on the drainage tube. Thus, with the balloon fixed relative to the tissue cavity... This facilitates the movement of the drainage tube relative to the airbag, thus making it easier to adjust the extension of the drainage tube. In the third stage, the first airbag 2 is inflated again, increasing the squeezing force of the first airbag 2 on the drainage tube, so that the airbag is fixed relative to the drainage tube again, thereby completing the entire coordination process. Thus, after completing the first stage, when the drainage tube and the second internal airbag 6 are inserted into the tissue cavity, the relative position stability of the drainage tube and the airbag is ensured, which facilitates the insertion of the second internal airbag 6 into the tissue cavity. Furthermore, in the third stage, inflating the first airbag 2 to achieve the same squeezing force as in the first stage can increase the contact area between the first airbag 2 and the drainage tube, thereby further improving the stability of the relative position between the first airbag 2 and the drainage tube.

[0030] Example 2 Based on the technical solution of Embodiment 1, further details can be found in [reference needed]. Figures 1-5 As shown, the second support member 9 includes an annular portion 14 and a strip-shaped portion 15. The annular portion 14 is an annular structure adapted to the groove 11 and is connected to the elastic member 10. The strip-shaped portion 15 is a strip-shaped sheet structure. There are several strip-shaped portions 15, which are disposed at the ends of the annular portion 14. Several strip-shaped portions 15 are arranged along the circumference of the annular portion 14, and the length direction of the strip-shaped portion 15 is in the same direction as the central axis of the annular portion 14. The second external airbag 7 is connected to the side of the strip portion 15 opposite to the central axis of the first support member 8; The strip-shaped portion 15 is elastic. When the airbag is engaged with the tissue cavity, the strip-shaped portion 15 extends out of the groove 11 and bends toward the central axis of the first support member 8.

[0031] Furthermore, by providing an annular portion 14 and a strip-shaped portion 15, the annular portion 14 is adapted to the groove 11, thereby improving the stability of the movement of the second support member 9 relative to the first support member 8. Simultaneously, the second external airbag 7 is connected to the strip-shaped portion 15, so that during the process of the airbag engaging with the tissue cavity, when the second internal airbag 6 and the second external airbag 7 are inflated, the second support member 9 can move relative to the first support member 8, causing the strip-shaped portion 15 to gradually extend out of the groove 11 and gradually bend towards the central axis of the first support member 8, thereby causing the second support member 9 to... The end of the second support member 9 that is away from the first support member 8 is tapered. After the first airbag 2 is inflated and squeezes the drainage tube, the end of the second support member 9 that is away from the first support member 8 gradually tapes. This allows the first airbag 2 to be squeezed, making it easier to squeeze the first airbag 2 towards the body. In the stage of fitting the airbag with the tissue cavity, the drainage tube squeezed by the first airbag 2 has a tendency to move or move towards the body. In this stage, the stability of the drainage tube inserted into the body can be further ensured, and the drainage tube can be prevented from falling out during the process of placing the drainage tube in the human body. Meanwhile, after the end of the second support member 9 away from the first support member 8 is tapered, when the drainage tube is pulled, the drainage tube drives the first airbag 2 to move, causing the first airbag 2 to move towards the outside. Its tapered structure can constrain the movement of the first airbag 2, strengthen the squeezing force of the first airbag 2 on the drainage tube, and further improve the stability of the drainage tube and the first airbag 2. Moreover, when the external force is released, the first airbag 2 can gradually recover its deformation, which can reduce the squeezing force of the first airbag 2 on the drainage tube. In this way, the drainage tube adapted to the airbag of this application can be improved to resist the risk of accidental pulling of the drainage tube during use, and the safety of the airbag and the adapted drainage tube of this application is improved. Furthermore, the strip portion 15 is made capable of unilateral bending. That is, the strip portion 15 is initially vertical, and when it bends, it bends towards the central axis closer to the first support member 8. Specifically, the strip portion 15 includes a strip-shaped deformable portion 16 and a strip-shaped constraining portion 17. The strip-shaped deformable portion 16 is a strip-shaped sheet structure, and there are several strip-shaped constraining portions 17 distributed along the length of the strip-shaped deformable portion 16. Adjacent strip-shaped constraining portions 17 are in contact or have a small gap. The strip-shaped constraining portions... 17 is a rigid structure. The strip-shaped constraint part 17 is located on the side of the strip-shaped deformable part 16 away from the central axis of the first support member 8. When the strip-shaped deformable part 16 bends toward the central axis of the first support member 8, it can increase the gap between two adjacent strip-shaped constraint parts 17. The strip-shaped constraint part 17 does not affect the bending of the strip-shaped deformable part 16 toward the central axis of the first support member 8. On the contrary, it will cause two adjacent strip-shaped constraint parts 17 to abut against each other, so that the strip-shaped part 15 has the ability to bend on one side.

[0032] As a preferred technical solution of this application, the second fixing area 13 is located on the end of the second support member 9 away from the first support member 8, and / or the first fixing area 12 is located on the end of the first support member 8 near the second support member 9.

[0033] Furthermore, by positioning the second fixing area 13 at the end of the second support member 9 away from the first support member 8, and when the end of the second support member 9 away from the first support member 8 is constricted, it is easier to push the first airbag 2 toward the body. At the same time, by positioning the first fixing area 12 at the end of the first support member 8 near the second support member 9, more space can be provided for the deformation of the first airbag 2 within the support member 1.

[0034] Example 3 Based on the technical solution of Embodiment 2, further details can be found in [reference needed]. Figures 1-6 As shown, the first support member 8 is provided with an adjustment component 18. The first support member 8 is connected to the elastic member 10 through the adjustment component 18. The adjustment component 18 is used to adjust the position of the end of the elastic member 10 that cooperates with the first support member 8 in the slide groove 11 along the length direction of the slide groove 11.

[0035] Furthermore, by setting the adjustment component 18, the position of the end of the elastic element 10 that cooperates with the first support member 8 in the slide groove 11 along the length direction of the slide groove 11 can be adjusted. In this way, with the thickness of the tissue that the airbag cooperates with remaining unchanged, by controlling the adjustment component 18, the position of the end of the elastic element 10 that cooperates with the first support member 8 can be changed. This can change the deformation of the elastic element 10 when the airbag cooperates with the tissue cavity, and thus change the squeezing force of the airbag on the tissue along the central axis of the support member 1. For different patients with different tissue thicknesses, by controlling the adjustment component 18, the appropriate squeezing force can be adjusted, improving patient comfort and the stability of the airbag and the tissue cavity.

[0036] As the preferred technical solution of this application, the adjustment component 18 includes a stop block 19 and an adjustment ring 20. The first support member 8 is provided with a guide groove 21, which is adapted to the stop block 19. The stop block 19 is connected to the elastic member 10. The stop block 19 can slide along the guide groove 21. The length direction of the guide groove 21 is in the same direction as the length direction of the slide groove 11. The adjustment ring 20 is provided on the outer wall of the first support member 8. The adjustment ring 20 is threadedly connected to the first support member 8. The adjustment ring 20 is provided with a limiting groove 22 adapted to the stop block 19. By rotating the adjusting ring 20 relative to the first support member 8, the adjusting ring 20 moves relative to the first support member 8 along the length direction of the first support member 8, and the limiting groove 22 slides relative to the abutment 19, so that the abutment 19 slides along the length direction of the slide groove 11.

[0037] Furthermore, by setting the abutment 19, adjusting ring 20, guide groove 21, and limiting groove 22, when controlling the adjusting assembly 18, the adjusting ring 20 rotates relative to the first support member 8, thereby causing the adjusting ring 20 to move relative to the first support member 8 along the length direction of the first support member 8, and thus causing the limiting groove 22 to slide relative to the abutment 19, so that the abutment 19 slides along the length direction of the slide groove 11, thereby adjusting the position of the end of the elastic member 10 that cooperates with the first support member 8 in the slide groove 11 along the length direction of the slide groove 11. Moreover, the adjusting ring 20 is connected to the first support member 8 by a threaded connection, which can improve the stability of the position of the abutment 19 after it moves in the limiting groove 22.

[0038] As the preferred technical solution of this application, both the first airbag 2 and the second airbag 3 are connected to an air tube 23, which is used to inflate or deflate the corresponding first airbag 2 or second airbag 3.

[0039] Furthermore, by setting up the trachea 23, the convenience of inflating and deflating the first airbag 2 and the second airbag 3 is improved. In addition, the second internal airbag 6 and the second external airbag 7 are each connected to the trachea 23 separately, so that the inflation and deflation of the first airbag 2, the second internal airbag 6 and the second external airbag 7 do not affect each other.

[0040] Example 4 This embodiment provides a drainage tube, see [link / reference] Figure 7 As shown, the device includes the aforementioned airbag and a drainage tube body 24, the airbag being fitted onto the drainage tube body 24.

[0041] In this application, the drainage tube includes an air bag and a drainage tube body 24. The drainage tube body 24 serves a drainage function. During the use of the drainage tube, the air bag is placed on the drainage tube body 24 and the drainage tube is matched with the patient's tissue cavity. This facilitates the adjustment of the positional relationship between the air bag and the drainage tube body 24, and also improves the stability of the matching between the air bag and the tissue cavity during the adjustment process.

[0042] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. An airbag for fixing a drainage tube, characterized in that: It includes a support member, a first airbag, and a second airbag. The support member has a cylindrical structure. The first airbag is located inside the support member, and the second airbag is located outside the support member. Both the first and second airbags can be inflated and deflated independently and are elastic. The first airbag is disposed along the inner wall of the support member. The first airbag is annular and is used to be sleeved on the drainage tube. After the first airbag is inflated, it can compress the drainage tube to fix the drainage tube relative to the airbag. The end of the support member that extends into the body is the internal end, and the end of the support member that extends out of the body is the external end. The second airbag includes a second internal airbag and a second external airbag. The second internal airbag is located on the support member near the internal end, and the second external airbag is located on the support member near the external end. Both the second internal airbag and the second external airbag are annular structures adapted to the support member. Both the second internal airbag and the second external airbag can be inflated and deflated independently. After inflation, the second internal airbag and the second external airbag are used to lock at both ends of the tissue cavity to prevent the airbag from loosening relative to the tissue cavity. The support includes a first support and a second support, the second support is sleeved on the first support, both the first support and the second support are cylindrical structures, the second internal airbag is disposed on the first support, and the second external airbag is disposed on the second support. The second support member can move relative to the first support member along its central axis to change the distance between the second internal airbag and the second external airbag. An elastic member is provided between the first support member and the second support member. The elastic member is elastic and its deformation gradually increases as the distance between the second internal airbag and the second external airbag gradually increases. The first support member has a groove formed on it, the groove is adapted to the second support member, the second support member can slide along the groove, the elastic member is located in the groove, one end of the elastic member is connected to the first support member, and the other end of the elastic member is connected to the second support member; The first support member is provided with an adjustment component, and the first support member is connected to the elastic member through the adjustment component. The adjustment component is used to adjust the position of the end of the elastic member that cooperates with the first support member in the groove along the length direction of the groove. The adjusting assembly includes a stop block and an adjusting ring. The first support member is provided with a guide groove, which is adapted to the stop block. The stop block is connected to the elastic member and can slide along the guide groove. The length direction of the guide groove is the same as the length direction of the sliding groove. The adjusting ring is provided on the outer wall of the first support member and is threadedly connected to the first support member. The adjusting ring is provided with a limiting groove adapted to the stop block. By rotating the adjusting ring relative to the first support member, the adjusting ring moves relative to the first support member along the length direction of the first support member, and the limiting groove slides relative to the abutment, so that the abutment slides along the length direction of the groove.

2. The airbag for fixing a drainage tube as described in claim 1, characterized in that: The first support member is provided with a first fixing area, and the second support member is provided with a second fixing area. Both the first fixing area and the second fixing area are annular, and both the first fixing area and the second fixing area are fixed to the outer wall of the first airbag.

3. The airbag for fixing a drainage tube as described in claim 2, characterized in that: The second support member includes an annular portion and a strip portion. The annular portion is an annular structure adapted to the groove and is connected to the elastic member. The strip portion is a strip-shaped structure, and there are several strip portions. The strip portions are disposed at the ends of the annular portion, and the several strip portions are arranged along the circumference of the annular portion. The length direction of the strip portion is in the same direction as the central axis of the annular portion. The second external airbag is connected to the side of the strip portion opposite to the central axis of the first support member; The strip-shaped portion is elastic, and when the airbag mates with the tissue cavity, the strip-shaped portion extends out of the groove and bends toward the central axis of the first support member.

4. The airbag for fixing a drainage tube as described in claim 3, characterized in that: The second fixing area is located on the end of the second support member away from the first support member, and / or the first fixing area is located on the end of the first support member near the second support member.

5. An airbag for fixing a drainage tube as described in any one of claims 1-4, characterized in that: Both the first and second airbags are connected to air tubes, which are used to inflate or deflate the corresponding first or second airbag.

6. A drainage tube, characterized in that: The device includes the airbag as described in any one of claims 1-5, and further includes a drainage tube body, wherein the airbag is used to be fitted onto the drainage tube body.

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