Anastomotic fistula drainage device

Abstract

The invention relates to the technical field of medical instruments, in particular to an anastomotic fistula drainage device. The anastomotic fistula drainage device comprises an air bag body, the air bag body has a first state and a second state, when the air bag body is in the first state, the air bag body can be fixedly connected with the esophagus, and when the air bag body is in the second state, the air bag body can be separated from and detached from the esophagus; the air bag further comprises an inflation pipe assembly which is installed on the air bag body, and the air bag body is switched between a first state and a second state through the inflation pipe assembly. The esophagus drainage device further comprises a drainage tube assembly, the drainage tube assembly is installed on the air bag body, and the drainage tube assembly can be fixed to the esophagus through the air bag body in the first state. Or the airbag body in the second state is separated from the esophagus. The technical problem of how to relatively fix the drainage tube assembly and the esophagus in the prior art is solved, and meanwhile, the drainage tube assembly can be safely pulled out of the esophagus.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to an anastomotic fistula drainage device. Background Art

[0002] Esophageal anastomotic fistula is a common complication after surgery for esophageal cancer, with an incidence of about 10%. Once anastomotic fistula occurs, the bacteria-containing fluid in the digestive tract will flow out from the sinus, leading to severe chest infection. The gastric acid and digestive enzymes contained in the gastric juice will corrode the surrounding structures, causing infection and even bleeding, which is often the cause of death. Currently, the treatment methods for anastomotic fistula are gradually increasing. Drainage is an important measure in clinical work because it is less painful and less traumatic, and is easily accepted by patients.

[0003] Patent document CN201620754677.9 discloses a prior art flushing and drainage device for cervical anastomotic fistula after esophageal cancer surgery. In the prior art disclosed in patent document CN201620754677.9, the double-layer tube is regarded as a drainage tube assembly for drainage. In the prior art, one end of the drainage tube assembly is inserted into the patient's body and docked with the anastomosis, thereby draining the bacteria-containing liquid of the anastomotic fistula; however, in the drainage process of the drainage port in the prior art, due to the lack of a fixing device, the drainage port cannot be fixed relative to the esophagus, which results in that if the patient's body position moves, such as the patient changes his lying position, the position of the drainage tube assembly relative to the esophagus will be offset, and the end of the drainage tube assembly inserted into the patient's body is easily changed from the state of docking with the anastomosis to the state of separation from the anastomosis, or even the state of a large distance from the anastomosis, thereby making it impossible for the bacteria-containing liquid at the anastomotic fistula to flow out of the patient's body from the drainage tube assembly.

[0004] During the recovery period after surgery, the patient's body position will inevitably change. It can be said that with the drainage structure in the prior art, it is inevitable that the position of the drainage tube assembly relative to the esophagus will shift. Once the position of the drainage tube assembly relative to the esophagus shifts, it is necessary to readjust the position of the drainage tube assembly or re-intubate the patient, which undoubtedly increases the patient's postoperative pain.

[0005] Therefore, the technical problem existing in the prior art is how to fix the drainage tube assembly relative to the esophagus. Summary of the invention

[0006] In view of the technical problem of how to relatively fix the drainage tube assembly and the esophagus in the prior art, the present invention provides an anastomotic fistula drainage device.

[0007] The present invention is achieved through the following technical solutions:

[0008] An anastomotic fistula drainage device comprises an airbag body; the airbag body has a first state and a second state, when the airbag body is in the first state, the airbag body can be fixedly connected to the esophagus, and when the airbag body is in the second state, the airbag body can be separated and disassembled from the esophagus;

[0009] It also includes an air pump assembly, which is mounted on the airbag body, and the airbag body is switched between a first state and a second state through the air pump assembly;

[0010] It also includes a drainage tube assembly, which is installed on the airbag body. The drainage tube assembly can be fixed to the esophagus through the airbag body in a first state; or can be separated from the esophagus through the airbag body in a second state.

[0011] Furthermore, the airbag body includes a first airbag and a second airbag that are arranged in mirror symmetry, a first connecting airbag is arranged on a side of the first airbag facing the second airbag, and a cavity of the first airbag communicates with a cavity of the first connecting airbag; a second connecting airbag is arranged on a side of the second airbag facing the first airbag, and a cavity of the second airbag communicates with a cavity of the second connecting airbag;

[0012] The airbag body is in the first state, and the first airbag and the second airbag can be fixed by the first connecting airbag and the second connecting airbag; the airbag body is in the second state, and the first connecting airbag and the second connecting airbag are gap-matched, and the first airbag and the second airbag can be separated from each other;

[0013] The first airbag has a first limiting surface, and the second airbag has a second limiting surface. When the first airbag and the second airbag are buckled with each other, the first limiting surface and the second limiting surface jointly limit and form an accommodating channel for the esophagus to penetrate;

[0014] Along the extension direction of the accommodating channel, the accommodating channel is divided into a first section and a second section. The minimum radial cross-sectional profile diameter of the first section is configured as a first preset diameter, and the minimum radial cross-sectional profile diameter of the second section is configured as a second preset diameter. The first preset diameter is smaller than the second preset diameter.

[0015] Furthermore, a first antibacterial coating is provided on the first limiting surface; and a second antibacterial coating is provided on the second limiting surface.

[0016] Further, the first connecting airbag is a trapezoidal protruding structure, and the second connecting airbag is a trapezoidal groove structure; or, the first connecting airbag is a trapezoidal groove structure, and the second connecting airbag is a trapezoidal protruding structure.

[0017] Furthermore, a first hole is provided on the outer surface of the first airbag on a side facing away from the second airbag, and a second hole is provided on the first limiting surface of the portion limited by the second section;

[0018] The drainage tube assembly comprises a first drainage tube, one end of which is restricted outside the first airbag, and the other end of which passes through the first hole and is connected with the hole wall of the second hole by interference fit.

[0019] Furthermore, a third hole is provided on the outer surface of the second airbag on the side facing away from the first airbag, and a fourth hole is provided on the second limiting surface of the portion limited by the second section;

[0020] The drainage tube assembly also includes a second drainage tube, one end of which is restricted outside the second airbag, and the other end of which passes through the third hole and the fourth hole respectively and is arranged in the accommodating channel.

[0021] Furthermore, there is a distance between one end of the first drainage tube connected to the hole wall of the second hole and one end of the second drainage tube disposed in the accommodating channel along the extending direction of the accommodating channel.

[0022] Furthermore, a first through hole and a second through hole are provided on the tube wall of the first drainage tube, wherein the first through hole is located outside the first airbag, and the second through hole is located in the airbag cavity of the first airbag;

[0023] The air pump assembly includes a first air pump, and the two ends of the first air pump are respectively a first end and a second end, wherein the first end is restricted outside the first air bag and the first drainage tube, and the second end respectively passes through the first through hole, the tube cavity of the part of the first drainage tube located between the first through hole and the second through hole, and the second through hole, and extends into the bag cavity of the first air bag.

[0024] Furthermore, the first end of the first inflation tube is detachably provided with a first spherical airbag.

[0025] Furthermore, the accommodating channel may be a tapered channel, a shuttle-shaped channel, or a cylindrical channel.

[0026] Compared with the prior art, the advantages of the present invention are:

[0027] First, it can be seen from the background technology that the double-layer tube is regarded as a drainage tube assembly for drainage. In the prior art, one end of the drainage tube assembly is inserted into the patient's body and docked with the anastomosis, thereby draining out the bacterial liquid in the anastomotic fistula; however, in the drainage process of the drainage port in the prior art, due to the lack of a fixing device, the drainage port cannot be fixed relative to the esophagus, which results in that if the patient's body position moves, for example, the patient changes his lying position, the position of the drainage tube assembly relative to the esophagus will shift, and the end of the drainage tube assembly inserted into the patient's body is prone to change from a docking state with the anastomosis to a state separated from the anastomosis, or even a state with a large distance from the anastomosis, thereby making it impossible for the bacterial liquid at the anastomotic fistula to flow out of the patient's body from the drainage tube assembly. During the recovery period after surgery, the patient's body position will inevitably change. It can be said that with the drainage structure in the prior art, the position of the drainage tube assembly relative to the esophagus is inevitably offset. Once the position of the drainage tube assembly relative to the esophagus is offset, it is necessary to readjust the position of the drainage tube assembly or re-intubate the patient, which undoubtedly increases the patient's postoperative pain. Therefore, the technical problem in the prior art is how to fix the drainage tube assembly relative to the esophagus.

[0028] In the present invention, an airbag body is proposed, and the airbag body has a first state. When the airbag body is in the first state, the airbag body can be fixedly connected to the esophagus; and the drainage tube assembly is installed on the airbag body, and the drainage tube assembly can be fixed to the esophagus through the airbag body in the first state, that is, the airbag body in the first state can be regarded as a fixing device for fixing the drainage tube assembly to the esophagus; in addition, the airbag body also has a second state. When the airbag body is in the second state, the airbag body can be separated and disassembled from the esophagus, so that the airbag body and the drainage tube assembly can be removed from the human body together. In the present invention, the drainage tube assembly is connected to the airbag body, and the airbag body in the first state can be connected to the esophagus, so that the drainage tube assembly is fixed to the patient's esophagus through the airbag body in the first state; therefore, the present invention solves the technical problem of how to relatively fix the drainage tube assembly to the esophagus in the prior art.

[0029] Second, in the prior art, there is a lack of a device for collecting the bacterial liquid at the anastomotic fistula. The bacterial liquid cannot be confined to a certain area using only a single drainage tube assembly, which easily leads to the spread of infection. At the same time, this makes it easy for the bacterial liquid at the anastomotic fistula to flow into the patient's chest cavity if the drainage is not timely, causing infection or even death of the patient.

[0030] In the present invention, in the first state, the first airbag and the second airbag are inflated and fixed to the esophagus respectively, wherein the first section of the accommodating channel is interference fit with one section of the esophagus, and the bottom of the accommodating channel is blocked by the upper surface of the patient's stomach, so that the upper surface of the stomach, the first section, a section of the accommodating channel between the upper surface of the stomach and the first section, and part of the outer surface of the esophagus in the accommodating channel are jointly restricted to form a closed cavity. If bacteria-containing liquid appears in the anastomotic fistula, the bacteria-containing liquid is confined in the closed cavity. The closed cavity can be regarded as a collection device for the bacteria-containing liquid at the anastomotic fistula, thereby achieving the technical effect of confining the bacteria-containing liquid to a certain area, that is, the closed cavity; further, since the bacteria-containing liquid is confined to a closed cavity in the present invention, in the case of untimely diversion, the bacteria-containing liquid is stored in the closed cavity and will not flow out, and thus the present invention avoids the situation where the bacteria-containing liquid at the anastomotic fistula flows into the patient's chest cavity in the state of untimely diversion, and further avoids the occurrence of infection or even death of the patient.

[0031] Third, in the present invention, the first inflation tube and the first drainage tube are both connected to the first airbag; the first drainage tube is connected to the first airbag, and the first drainage tube is connected to the first airbag through a first hole and a second hole provided on the first airbag, and the first inflation tube is connected to the first airbag, and there is no need to drill holes in the first airbag, but the first end of the first inflation tube is restricted outside the first airbag and the first drainage tube, a part of the first inflation tube is located inside the tube cavity of the first inflation tube, and the other end of the first inflation tube is communicated with the bag cavity of the first airbag; therefore, In the present invention, for the setting method of connecting the first inflation tube to the first airbag, there is no need to drill a hole in the first airbag, but the setting is performed by drilling a hole in the first drainage tube; compared with: the first inflation tube and the first drainage tube are both connected to the first airbag, and it is necessary to respectively set a hole compatible with the first inflation tube and a hole compatible with the first drainage tube in the first airbag, such a technical solution, in the present invention, the first inflation tube and the first drainage tube are both connected to the first airbag, which reduces the number of holes drilled in the first airbag, thereby greatly reducing the risk of air leakage in the first airbag.

[0032] Fourth, there is a distance between one end of the first drainage tube connected to the hole wall of the second hole and one end of the second drainage tube arranged in the accommodating channel along the extension direction of the accommodating channel; the anastomosis is within this distance to avoid the end of the first drainage tube connected to the hole wall of the second hole and the end of the second drainage tube arranged in the accommodating channel from scraping the anastomosis and causing discomfort to the patient.

[0033] Fifth, the first connecting airbag is a trapezoidal protruding structure, and the second connecting airbag is a trapezoidal groove structure. In the direction from the first connecting airbag to the second connecting airbag, the first connecting airbag with the trapezoidal protruding structure is radially divergent, and the shape and size of the second connecting airbag with the trapezoidal groove structure correspond to the shape and size of the first connecting airbag. This results in that after the first airbag and the second airbag are interlocked through the first connecting airbag and the second connecting airbag, the first connecting airbag with the trapezoidal protruding structure and the second connecting airbag with the trapezoidal groove structure are difficult to separate along the radial direction of the esophagus, thereby making the fixed connection between the airbag body and the esophagus more secure.

[0034] Sixth, during the patient's rehabilitation treatment, the outer wall of the esophagus is easily in contact with the first restriction surface and the second restriction surface; in the present invention, a first antibacterial coating is provided on the first restriction surface, and a second antibacterial coating is provided on the second restriction surface to avoid the occurrence of anastomotic infection during the process in which the first restriction surface and the second restriction surface are in contact with the anastomotic stoma respectively.

[0035] Seventh, in the present invention, the airbag body is connected to the drainage tube assembly. When the drainage tube assembly needs to be fixed to the patient, it is only necessary to inflate the first airbag and the second airbag respectively, and then buckle the first airbag and the second airbag together; when the drainage tube assembly needs to be removed from the patient, it is only necessary to deflate the first airbag and the second airbag to achieve the simultaneous removal of the airbag body and the drainage tube assembly; this greatly simplifies the operating steps of medical staff, making the installation and removal of the drainage tube assembly very simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the anastomotic fistula drainage device of the present invention;

[0037] Figure 2 A top view of the anastomotic fistula drainage device of the present invention;

[0038] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of;

[0039] Figure 4 for Figure 3 A schematic diagram of the structure enlargement of the A region in the middle;

[0040] Figure 5 is a schematic structural diagram of a first drainage tube of the present invention;

[0041] Figure 6 is a schematic diagram of the connection between the first drainage tube and the first air pumping tube;

[0042] Figure 7 It is a schematic diagram of the application of the anastomotic fistula drainage device of the present invention.

[0043] Markings in the figure: airbag body (1), drainage tube assembly (2), first airbag (3), second airbag (4), first connecting airbag (5), second connecting airbag (6), first limiting surface (7), second limiting surface (8), accommodating channel (9), first section (10), second section (11), first antibacterial coating (12), second antibacterial coating (13), first hole (14), second hole (15), first drainage tube (16), third hole (17), fourth hole (18), second drainage tube (19), first through hole (20), second through hole (21), first inflation tube (22), first spherical airbag (23). DETAILED DESCRIPTION

[0044] The following is a further non-restrictive detailed description of the technical solution of the invention in conjunction with the preferred embodiments and the accompanying drawings. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings. In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and cannot be understood as limitations on the present invention.

[0045] Example 1

[0046] like Figure 1 to Figure 3 As shown, this embodiment proposes an anastomotic fistula drainage device, including an airbag body 1; the airbag body 1 has a first state and a second state, when the airbag body 1 is in the first state, the airbag body 1 can be fixedly connected to the esophagus, and when the airbag body 1 is in the second state, the airbag body 1 can be separated and disassembled from the esophagus; it also includes an inflation tube assembly, which is installed on the airbag body 1, and the airbag body 1 switches between the first state and the second state through the inflation tube assembly; it also includes a drainage tube assembly 2, which is installed on the airbag body 1, and the drainage tube assembly 2 can be fixed to the esophagus through the airbag body 1 in the first state; or can be separated from the esophagus through the airbag body 1 in the second state.

[0047] All the cavities of the airbag body 1 are filled with gas, the airbag body 1 is inflated, and the airbag body 1 is in a first state; there is no gas in the cavities of the airbag body 1, or the amount of gas is small and insufficient to inflate the airbag body 1, the airbag body 1 is in a deflated state, and the airbag body 1 is in a second state; the airbag body 1 is inflated or the gas in the airbag body 1 is extracted through the inflation pipe assembly, thereby switching the airbag body 1 between the first state and the second state.

[0048] like Figure 1 to Figure 3 As shown, specifically, the airbag body 1 includes a first airbag 3 and a second airbag 4 that are arranged in mirror symmetry. A first connecting airbag 5 is arranged on the side of the first airbag 3 facing the second airbag 4, and the airbag cavity of the first airbag 3 is communicated with the airbag cavity of the first connecting airbag 5; a second connecting airbag 6 is arranged on the side of the second airbag 4 facing the first airbag 3, and the airbag cavity of the second airbag 4 is communicated with the airbag cavity of the second connecting airbag 6; the airbag body 1 is in a first state, and the first airbag 3 and the second airbag 4 can be fixed by the first connecting airbag 5 and the second connecting airbag 6; the airbag body 1 is in a second state, and the gap between the first connecting airbag 5 and the second connecting airbag 6 The first airbag 3 and the second airbag 4 are separable from each other; the first airbag 3 has a first limiting surface 7, and the second airbag 4 has a second limiting surface 8. When the first airbag 3 and the second airbag 4 are engaged with each other, the first limiting surface 7 and the second limiting surface 8 jointly limit and form an accommodating channel 9 for being penetrated by the esophagus; along the extension direction of the accommodating channel 9, the accommodating channel 9 is divided into a first section 10 and a second section 11, and the minimum radial cross-sectional profile diameter of the first section 10 is configured as a first preset diameter, and the minimum radial cross-sectional profile diameter of the second section 11 is configured as a second preset diameter, and the first preset diameter is smaller than the second preset diameter.

[0049] More specifically, the specific structures of the first connection airbag 5 and the second connection airbag 6 are: the first connection airbag 5 is a trapezoidal protruding structure, and the second connection airbag 6 is a trapezoidal groove structure; or the first connection airbag 5 is a trapezoidal groove structure, and the second connection airbag 6 is a trapezoidal protruding structure. In this embodiment, the first connection airbag 5 is a trapezoidal protruding structure, and the second connection airbag 6 is a trapezoidal groove structure. In the direction from the first connection airbag 5 to the second connection airbag 6, the first connection airbag 5 with the trapezoidal protruding structure is radially divergent, and the shape and size of the second connection airbag 6 with the trapezoidal groove structure correspond to the shape and size of the first connection airbag 5.

[0050] The accommodating channel 9 can be a conical channel, a shuttle channel, or a cylindrical channel; most preferably, the accommodating channel 9 is a shuttle channel, and less preferably, the accommodating channel 9 is a conical channel; in this embodiment, the accommodating channel 9 is a shuttle channel. Accordingly, the first limiting surface 7 and the second limiting surface 8 are arcuate surfaces, and after the two are interlocked, the accommodating channel 9 configured as a shuttle channel is formed. Furthermore, the length of the accommodating channel 9 can be designed to be different specifications to accommodate patients of different heights.

[0051] like Figure 3 As shown, preferably, a first antibacterial coating 12 is provided on the first limiting surface 7; and a second antibacterial coating 13 is provided on the second limiting surface 8. Such a configuration can prevent the first limiting surface 7 and the second limiting surface 8 from contacting the anastomotic stoma respectively, thereby preventing anastomotic stoma infection. The first antibacterial coating 12 and the second antibacterial coating 13 can be coating structures composed of antibiotics, antibacterial agents, silver ions and other materials respectively. Antibacterial coatings have been widely used in the medical field, and the prior art can be found, so they will not be elaborated here.

[0052] In this embodiment, Figure 3 As shown, the first section 10 is located above the second section 11; the first preset diameter can be configured according to specific usage conditions, and the configuration of the first preset diameter should be such that, when the airbag body 1 is in the first state, the inner wall of the channel of the first section 10 accommodating the channel 9 can be interference fit with a portion of the outer wall of the esophagus; the second preset diameter can be configured according to specific usage conditions, and no specific restrictions are made herein; for example, in the present embodiment, the radial profile diameter of the upper port portion of the first section 10 is the minimum radial cross-sectional profile diameter of the first section 10, and the radial profile diameter of the lower port portion of the second section 11 is the minimum radial cross-sectional profile diameter of the second section 11; in the present embodiment, the first preset diameter is 2cm to 5cm, and the second preset diameter is 5cm to 10cm.

[0053] like Figure 1 to Figure 4 As shown, the connection structure between the airbag body 1 and the drainage tube assembly 2 is as follows: a first hole 14 is set on the outer surface of the first airbag 3 on the side facing away from the second airbag 4, and a second hole 15 is set on the first limiting surface 7 limited by the second section 11; the drainage tube assembly 2 includes a first drainage tube 16, one end of the first drainage tube 16 is limited outside the first airbag 3, and the other end passes through the first hole 14 and is connected to the hole wall of the second hole 15 by interference fit.

[0054] A third hole 17 is provided on the outer surface of the second airbag 4 on the side facing away from the first airbag 3, and a fourth hole 18 is provided on the second limiting surface 8 limited by the second section 11; the drainage tube assembly 2 also includes a second drainage tube 19, one end of which is limited outside the second airbag 4, and the other end passes through the third hole 17 and the fourth hole 18 respectively, and is arranged in the accommodating channel 9. In this embodiment, preferably, the second drainage tube 19 is arranged in a section in the accommodating channel 9, and its length is about 20 cm, which is convenient for cutting during surgery to ensure that it is in Figure 7 The area below the anastomosis.

[0055] like Figure 3-4 As shown, further, there is a spacing between one end of the first drainage tube 16 connected to the hole wall of the second hole 15 and one end of the second drainage tube 19 arranged in the accommodating channel 9 along the extension direction of the accommodating channel 9; the size of the spacing can be configured according to the specific size of the anastomosis; usually, the anastomosis is within this spacing to avoid the end of the first drainage tube 16 connected to the hole wall of the second hole 15 and the end of the second drainage tube 19 arranged in the accommodating channel 9 respectively scraping the anastomosis and causing discomfort to the patient.

[0056] like Figure 5-6 Furthermore, inflation and deflation of the first airbag 3 are accomplished through a first air pumping tube 22, and the specific structure is as follows: a first through hole 20 and a second through hole 21 are arranged on the tube wall of the first drainage tube 16, wherein the first through hole 20 is located outside the first airbag 3, and the second through hole 21 is located in the bag cavity of the first airbag 3; the air pumping tube assembly includes a first air pumping tube 22, and the two ends of the first air pumping tube 22 are respectively a first end and a second end, wherein the first end is restricted outside the first airbag 3 and the first drainage tube 16, and the second end respectively passes through the first through hole 20, the tube cavity of the part of the first drainage tube 16 located between the first through hole 20 and the second through hole 21, and the second through hole 21, and extends into the bag cavity of the first airbag 3.

[0057] In this embodiment, the first end of the first inflation tube 22 is restricted outside the first airbag 3 and the first drainage tube 16, and the second end passes through the first through hole 20, the tube cavity of the portion of the first drainage tube 16 located between the first through hole 20 and the second through hole 21, and the second through hole 21, and extends into the bag cavity of the first airbag 3. After the first drainage tube 16 is connected to the first airbag 3, the first inflation tube 22 is connected to the first airbag 3 again, and there is no need to drill a hole in the first airbag 3 again. Instead, the first inflation tube 22 establishes a connection relationship with the first airbag 3 through the first drainage tube 16 and communicates with the bag cavity of the first airbag 3, which reduces the number of holes drilled on the first airbag 3 and reduces the risk of air leakage in the first airbag 3.

[0058] Preferably, the outer wall of the first air tube 22 is respectively connected with the hole wall of the first through hole 20 and the hole wall of the second through hole 21 by interference fit, or the gap between the outer wall of the first air tube 22 and the hole wall of the first through hole 20, and the gap between the outer wall of the first air tube 22 and the hole wall of the second through hole 21, are filled with sealant to ensure air tightness.

[0059] Furthermore, the first end of the first air pumping tube 22 is detachably provided with a first spherical airbag 23. When the first spherical airbag 23 is connected to the first end of the first air pumping tube 22, the first spherical airbag 23 is squeezed, and then gas is input into the bag cavity of the first airbag 3 through the first air pumping tube 22; when the first spherical airbag 23 is disassembled and separated from the first end of the first air pumping tube 22, the air in the bag cavity of the first airbag 3 is transported to the outside of the first airbag 3 through the first air pumping tube 22, thereby adjusting the air volume in the bag cavity of the first airbag 3.

[0060] Furthermore, in this embodiment, the air pump assembly also includes a second air pump. The setting method, connection type, and shape structure of the second air pump are similar to those of the first air pump 22 mentioned above, and are arranged in a mirror-symmetrical manner, which will not be elaborated here. The second air pump is located at one end outside the second air bag 4, and is also equipped with a second spherical air bag.

[0061] The first spherical airbag 23 and the second spherical airbag have the same structure, and their structures and principles are all existing technologies, which are widely used in the medical field, such as the spherical airbag used in a sphygmomanometer.

[0062] Furthermore, in other optional embodiments, the first spherical airbag 23 may be removed and a pressure gauge may be added at the first end of the first inflation tube 22 to monitor the air pressure in the first airbag 3 in real time.

[0063] Furthermore, in other optional embodiments, a flap-type switch valve may be provided at the first end of the first inflation tube 22. A syringe without a needle is inserted into the flap-type switch valve to open the flap, and the first inflation tube 22 is connected. At this time, inflation or degassing can be performed. After the syringe is removed, the flap is automatically closed, and the first inflation tube 22 is cut off, so that the gas in the first airbag 3 cannot leak out.

[0064] Combination Figure 1 to Figure 7 , when using:

[0065] 1) A window is opened in the patient's chest, and an esophageal cancer resection operation is performed on the patient, and the anastomosis is sutured; then, a slightly inflated first airbag 3 and a second airbag 4 are implanted into the human body through the window opened in the patient's chest, and the airbag body 1 is in the second state at this time;

[0066] 2) The first airbag 3 and the second airbag 4 are respectively arranged on both sides of the esophagus, and then the first airbag 3 and the second airbag 4 are close to each other and buckled, until the first connecting airbag 5 with a trapezoidal protruding structure is inserted into the second connecting airbag 6 with a trapezoidal groove structure; along the extension direction of the accommodating channel 9, the position of the airbag body 1 is adjusted so that the bottom of the airbag body 1 abuts against the upper surface of the stomach, and the upper surface of the stomach blocks the bottom opening of the accommodating channel 9;

[0067] 3) Squeeze the first spherical airbag 23, and inflate the air in the airbag cavity of the first airbag 3 through the first inflation tube 22; squeeze the second spherical airbag, and inflate the air in the airbag cavity of the second airbag 4 through the second inflation tube; the first airbag 3 and the second airbag 4 are respectively filled with gas and inflated until the first connecting airbag 5 and the second connecting airbag 6 form an interference fit, that is, the airbag body 1 is in the first state, and the first section 10 of the accommodating channel 9 and one section of the esophagus are in an interference fit; at this time, the upper surface of the stomach, the first section 10, a section of the accommodating channel 9 located between the upper surface of the stomach and the first section 10, and the outer surface of the part of the esophagus in the accommodating channel 9 are jointly restricted to form a closed cavity, and the anastomosis is located in the closed cavity. If bacterial liquid appears in the anastomotic fistula, the bacterial liquid is confined in the closed cavity; at the same time, the anastomosis is located between: one end of the first drainage tube 16 connected to the hole wall of the second hole 15 and one end of the second drainage tube 19 set in the accommodating channel 9;

[0068] 4) The patient takes methylene blue reagent orally, and uses a needle to aspirate the first drainage tube 16 or the second drainage tube 19 to observe whether anastomotic fistula occurs;

[0069] 5.1) If anastomotic leakage occurs, a needle is inserted into the end of the first drainage tube 16 outside the first airbag 3, and suction is performed through the needle to create a negative pressure in the first drainage tube 16, so that the bacteria-containing liquid confined in the closed cavity is sucked into the first drainage tube 16 and then sucked out by the needle. The same is true for the second drainage tube 19. Alternatively, the bacteria-containing liquid may be sucked without a needle, and the bacteria-containing liquid may be allowed to flow out naturally through the first drainage tube 16 and the second drainage tube 19.

[0070] 5.2) If no anastomotic leakage occurs, the first drainage tube 16 and the second drainage tube 19 can drain the tissue fluid produced in the patient's body after the operation;

[0071] 5.3) If infection occurs at the anastomosis, physiological saline or antibiotic reagent can be injected into the anastomosis through the first drainage tube 16 and the second drainage tube 19. During flushing, the patient can be in the left or right side lying position;

[0072] 6) After the patient recovers, the gas in the bag cavity of the first airbag 3 is released through the first inflation tube 22, and the gas in the bag cavity of the second airbag 4 is released through the second inflation tube. The first airbag 3 and the second airbag 4 are deflated and shrunk respectively, that is, the airbag body 1 is in the second state, the first connecting airbag 5 and the second connecting airbag 6 are separated, and the first airbag 3 and the second airbag 4 are removed from the esophagus along the radial direction of the esophagus, and taken out from the window of the patient's chest together with the drainage tube assembly 2.

[0073] The advantages of this embodiment are as follows:

[0074] First, it can be known from the background technology that in the prior art disclosed in patent document CN201620754677.9, the double-layer tube is regarded as a drainage tube assembly for drainage. In the prior art, one end of the drainage tube assembly is inserted into the patient's body and docked with the anastomosis, so as to drain the bacteria-containing liquid of the anastomotic fistula; however, in the drainage process of the drainage port in the prior art, due to the lack of a fixing device, the drainage port cannot be fixed relative to the esophagus, which results in that if the patient's body position moves, for example, the patient changes his lying position, the position of the drainage tube assembly relative to the esophagus will be offset, and the end of the drainage tube assembly inserted into the patient's body is easily changed from a state docking with the anastomosis to a state separated from the anastomosis, or even a state with a large distance from the anastomosis, so that the bacteria-containing liquid at the anastomotic fistula cannot flow out of the patient's body from the drainage tube assembly. During the recovery period after surgery, the patient's body position will inevitably change. It can be said that with the drainage structure in the prior art, the position of the drainage tube assembly relative to the esophagus is inevitably offset. Once the position of the drainage tube assembly relative to the esophagus is offset, it is necessary to readjust the position of the drainage tube assembly or re-intubate the patient, which undoubtedly increases the patient's postoperative pain. Therefore, the technical problem in the prior art is how to fix the drainage tube assembly relative to the esophagus.

[0075] In this embodiment, an airbag body 1 is proposed. The airbag body 1 has a first state. When the airbag body 1 is in the first state, the airbag body 1 can be fixedly connected to the esophagus; and the drainage tube assembly 2 is installed on the airbag body 1. The drainage tube assembly 2 can be fixed to the esophagus through the airbag body 1 in the first state, that is, the airbag body 1 in the first state can be regarded as a fixing device for fixing the drainage tube assembly 2 to the esophagus; in addition, the airbag body 1 also has a second state. When the airbag body 1 is in the second state, the airbag body 1 can be separated and disassembled from the esophagus, so that the airbag body 1 and the drainage tube assembly 2 can be removed from the human body together. In this embodiment, the drainage tube assembly 2 is connected to the airbag body 1, and the airbag body 1 in the first state can be connected to the esophagus, so that the drainage tube assembly 2 is mutually fixed to the patient's esophagus through the airbag body 1 in the first state; therefore, this embodiment solves the technical problem of how to relatively fix the drainage tube assembly to the esophagus in the prior art.

[0076] Second, in the prior art, there is a lack of a device for collecting the bacterial liquid at the anastomotic fistula. The bacterial liquid cannot be confined to a certain area using only a single drainage tube assembly, which easily leads to the spread of infection. At the same time, this makes it easy for the bacterial liquid at the anastomotic fistula to flow into the patient's chest cavity if the drainage is not timely, causing infection or even death of the patient.

[0077] In the present embodiment, in the first state, the first airbag 3 and the second airbag 4 are inflated and fixed to the esophagus respectively, wherein the first section 10 of the accommodating channel 9 is interference fit with one section of the esophagus, and the bottom of the accommodating channel is blocked by the upper surface of the patient's stomach, so that the upper surface of the stomach, the first section 10, and a section of the accommodating channel 9 located between the upper surface of the stomach and the first section 10 are jointly restricted to form a closed cavity. If bacteria-containing liquid appears in the anastomotic fistula, the bacteria-containing liquid is confined in the closed cavity. The closed cavity can be regarded as a collection device for the bacteria-containing liquid at the anastomotic fistula, thereby achieving the technical effect of confining the bacteria-containing liquid to a certain area, that is, the closed cavity; further, since the bacteria-containing liquid is confined to a closed cavity in the present embodiment, in the case of untimely diversion, the bacteria-containing liquid is stored in the closed cavity and will not flow out, and thus the present embodiment avoids the situation where the bacteria-containing liquid at the anastomotic fistula flows into the patient's chest cavity in the case of untimely diversion, and further avoids the occurrence of infection or even death of the patient.

[0078] Third, in the present embodiment, the first inflation tube 22 and the first drainage tube 16 are both connected to the first airbag 3; the first drainage tube 16 is connected to the first airbag 3, and the first drainage tube 16 is connected to the first airbag 3 via the first hole 14 and the second hole 15 provided on the first airbag 3, while the first inflation tube 22 is connected to the first airbag 3, and there is no need to drill holes in the first airbag 3, but the first end of the first inflation tube 22 is restricted outside the first airbag 3 and the first drainage tube 16, a part of the first inflation tube 22 is located inside the tube cavity of the first inflation tube 22, and the other end of the first inflation tube 22 is communicated with the airbag cavity of the first airbag 3. ; Therefore, in this embodiment, for the setting mode of connecting the first air inflation tube 22 to the first airbag 3, there is no need to drill a hole on the first airbag 3, but it is set by drilling a hole on the first drainage tube 16; compared with: the first air inflation tube 22 and the first drainage tube 16 are both connected to the first airbag 3, and it is necessary to respectively set a hole compatible with the first air inflation tube 22 and a hole compatible with the first drainage tube 16 on the first airbag 3, such a technical scheme, in this embodiment, the first air inflation tube 22 and the first drainage tube 16 are both connected to the first airbag 3, which reduces the number of holes drilled on the first airbag 3, thereby greatly reducing the risk of leakage of the first airbag 3.

[0079] Fourth, there is a distance between one end of the first drainage tube 16 connected to the hole wall of the second hole 15 and one end of the second drainage tube 19 disposed in the accommodating channel 9 along the extension direction of the accommodating channel 9; the anastomosis is within this distance to prevent the end of the first drainage tube 16 connected to the hole wall of the second hole 15 and the end of the second drainage tube 19 disposed in the accommodating channel 9 from scraping the anastomosis and causing discomfort to the patient.

[0080] Fifth, the first connecting airbag 5 is a trapezoidal protruding structure, and the second connecting airbag 6 is a trapezoidal groove structure. In the direction from the first connecting airbag 5 to the second connecting airbag 6, the first connecting airbag 5 with the trapezoidal protruding structure is radially divergent, and the shape and size of the second connecting airbag 6 with the trapezoidal groove structure correspond to the shape and size of the first connecting airbag 5. This results in that after the first airbag 3 and the second airbag 4 are interlocked through the first connecting airbag 5 and the second connecting airbag 6, it is difficult to separate the first connecting airbag 5 with the trapezoidal protruding structure and the second connecting airbag 6 with the trapezoidal groove structure along the radial direction of the esophagus, thereby making the fixed connection between the airbag body 1 and the esophagus more secure.

[0081] Sixth, during the patient's rehabilitation treatment, the outer wall of the esophagus is easily in contact with the first restriction surface 7 and the second restriction surface 8; in the present embodiment, a first antibacterial coating 12 is provided on the first restriction surface 7, and a second antibacterial coating 13 is provided on the second restriction surface 8 to avoid the occurrence of anastomotic infection caused by the first restriction surface 7 and the second restriction surface 8 respectively contacting the anastomotic stoma.

[0082] Seventh, in the present embodiment, the airbag body 1 is connected to the drainage tube assembly 2. When the drainage tube assembly 2 needs to be fixed to the patient, it is only necessary to inflate the first airbag 3 and the second airbag 4 respectively, and then buckle the first airbag 3 and the second airbag 4 together; when the drainage tube assembly 2 needs to be removed from the patient, it is only necessary to deflate the first airbag 3 and the second airbag 4 to achieve the simultaneous removal of the airbag body 1 and the drainage tube assembly 2; this greatly simplifies the operating steps of medical staff, making the installation and removal of the drainage tube assembly 2 very simple and convenient.

[0083] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. An anastomotic fistula drainage device, characterized in that: The invention comprises an airbag body (1); the airbag body (1) has a first state and a second state; when the airbag body (1) is in the first state, the airbag body (1) can be fixedly connected to the esophagus; when the airbag body (1) is in the second state, the airbag body (1) can be separated and disassembled from the esophagus; It also includes an air pump assembly, which is mounted on the airbag body (1), and the airbag body (1) is switched between a first state and a second state through the air pump assembly; It also includes a drainage tube assembly (2), which is installed on the airbag body (1). The drainage tube assembly (2) can be fixed to the esophagus by the airbag body (1) in a first state; or can be separated from the esophagus by the airbag body (1) in a second state.

2. The anastomotic fistula drainage device according to claim 1, characterized in that: The airbag body (1) comprises a first airbag (3) and a second airbag (4) which are arranged in mirror symmetry. A first connecting airbag (5) is arranged on a side of the first airbag (3) facing the second airbag (4), and a cavity of the first airbag (3) is communicated with a cavity of the first connecting airbag (5); a second connecting airbag (6) is arranged on a side of the second airbag (4) facing the first airbag (3), and a cavity of the second airbag (4) is communicated with a cavity of the second connecting airbag (6); When the airbag body (1) is in a first state, the first airbag (3) and the second airbag (4) can be fixed by means of the first connecting airbag (5) and the second connecting airbag (6); when the airbag body (1) is in a second state, the first connecting airbag (5) and the second connecting airbag (6) are loosely matched, and the first airbag (3) and the second airbag (4) can be separated from each other; The first airbag (3) has a first limiting surface (7), and the second airbag (4) has a second limiting surface (8). When the first airbag (3) and the second airbag (4) are engaged with each other, the first limiting surface (7) and the second limiting surface (8) jointly limit and form an accommodating passage (9) for being penetrated by the esophagus. Along the extension direction of the accommodating channel (9), the accommodating channel (9) is divided into a first section (10) and a second section (11); the minimum radial cross-sectional profile diameter of the first section (10) is configured as a first preset diameter; the minimum radial cross-sectional profile diameter of the second section (11) is configured as a second preset diameter; and the first preset diameter is smaller than the second preset diameter.

3. The anastomotic fistula drainage device according to claim 2, characterized in that: A first antibacterial coating (12) is provided on the first limiting surface (7); and a second antibacterial coating (13) is provided on the second limiting surface (8).

4. The anastomotic fistula drainage device according to claim 2, characterized in that: The first connecting airbag (5) is a trapezoidal protruding structure, and the second connecting airbag (6) is a trapezoidal groove structure; or, the first connecting airbag (5) is a trapezoidal groove structure, and the second connecting airbag (6) is a trapezoidal protruding structure.

5. The anastomotic fistula drainage device according to claim 3 or 4, characterized in that: A first hole (14) is provided on the outer surface of the first airbag (3) on a side facing away from the second airbag (4), and a second hole (15) is provided on the first limiting surface (7) limited by the second section (11); The drainage tube assembly (2) comprises a first drainage tube (16), one end of which is confined outside the first airbag (3), and the other end of which passes through the first hole (14) and is connected to the hole wall of the second hole (15) by interference fit.

6. The anastomotic fistula drainage device according to claim 5, characterized in that: A third hole (17) is provided on the outer surface of the second airbag (4) on the side facing away from the first airbag (3), and a fourth hole (18) is provided on the portion of the second limiting surface (8) limited by the second section (11); The drainage tube assembly (2) also includes a second drainage tube (19), one end of which is confined outside the second airbag (4), and the other end of which passes through the third hole (17) and the fourth hole (18) respectively and is arranged in the accommodating channel (9).

7. The anastomotic fistula drainage device according to claim 6, characterized in that: There is a spacing between one end of the first drainage tube (16) connected to the hole wall of the second hole (15) and one end of the second drainage tube (19) arranged in the accommodating channel (9) along the extension direction of the accommodating channel (9).

8. The anastomotic fistula drainage device according to claim 5, characterized in that: A first through hole (20) and a second through hole (21) are provided on the tube wall of the first drainage tube (16), wherein the first through hole (20) is located outside the first airbag (3), and the second through hole (21) is located inside the airbag cavity of the first airbag (3); The air pump assembly comprises a first air pump tube (22), the two ends of the first air pump tube (22) being respectively a first end and a second end, wherein the first end is restricted outside the first air bag (3) and the first drainage tube (16), and the second end respectively passes through the first through hole (20), the tube cavity of the part of the first drainage tube (16) between the first through hole (20) and the second through hole (21), and the second through hole (21), and extends into the bag cavity of the first air bag (3).

9. The anastomotic fistula drainage device according to claim 5, characterized in that: The first end of the first inflation tube (22) is detachably provided with a first spherical air bag (23).

10. The anastomotic fistula drainage device according to claim 2, characterized in that: The accommodating channel (9) can be a tapered channel, a shuttle channel, or a cylindrical channel.

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