Adsorption structure and esophageal fistula device thereof

Abstract

The utility model provides an adsorption structure and esophageal fistula device thereof, wherein the adsorption structure comprises a drainage tube and a sponge adsorption head, the front section of the sponge adsorption head is cone-shaped and is internally provided with a hollow part, one end of the drainage tube is provided with a plurality of air windows, the hollow part of the sponge adsorption head is wrapped on the drainage tube, and the sponge adsorption head covers the air windows. The front section of the sponge adsorption head corresponds to one end part of the drainage tube; the sponge adsorption head is provided with a plurality of gaps, and the directions of the gaps are parallel to the axis direction of the drainage tube. The esophageal fistula liquid adsorption device solves the problems that in the prior art, the efficiency of esophageal fistula liquid adsorption operation is low, and the adsorption effect is poor; and the second problem is how to prevent the liquid in the stomach from corroding the fistula when the liquid generated in the esophageal fistula is sucked out of the body.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, and in particular to an adsorption structure and its esophageal fistula device. Background Technology

[0002] Currently, in patients with esophageal fistulas, after external medication, the fistula gradually shrinks during treatment, and fluid (such as pus, exudate, and necrotic secretions) accumulates within it, requiring aspiration. Operators typically create a disposable suction head using materials such as medical gauze. This head is connected to a drainage tube, and an esophagoscope is used to insert the self-made suction head into the fistula opening within the esophagus. The suction head is then used to absorb the exudate from the fistula, keeping it dry. However, the self-made suction head (i.e., placing it directly into the fistula) is inefficient and has poor suction effect. Therefore, how to overcome the problems of low efficiency and poor suction effect in esophageal fistula fluid aspiration is crucial.

[0003] Furthermore, when the fistula is close to the cardia of the stomach, if gastric fluid (such as gastric juice) overflows from the cardia and spreads upwards to the fistula, it will corrode the fistula, causing secondary damage and affecting the recovery of the esophageal fistula. Therefore, how to prevent gastric fluid from corroding the fistula while aspirating the fluid generated inside the esophageal fistula becomes a technical problem that needs to be solved. Utility Model Content

[0004] The purpose of this utility model is to provide an adsorption structure and its esophageal fistula device, mainly to solve the following problems in the prior art: 1. How to overcome the low efficiency and poor adsorption effect of esophageal fistula liquid adsorption operation; 2. How to avoid gastric liquid corroding the fistula opening when aspirating the liquid generated in the esophageal fistula out of the body.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: an adsorption structure, characterized in that: the adsorption structure includes a drainage tube and a sponge adsorption head, the front section of the sponge adsorption head is cone-shaped and has a hollow part inside, one end of the drainage tube is provided with several air windows, the hollow part of the sponge adsorption head wraps around the drainage tube, the sponge adsorption head covers the air windows, and the front section of the sponge adsorption head corresponds to one end of the drainage tube.

[0006] The sponge adsorption head has several gaps, and the direction of the gaps is parallel to the axis of the drainage tube.

[0007] Furthermore, the cross-section of the gap is V-shaped; the rear section of the sponge adsorption head is cylindrical, and the length of the front section of the sponge adsorption head is equal to the length of the rear section of the sponge adsorption head.

[0008] Furthermore, several air vents are evenly distributed on the drainage tube.

[0009] Furthermore, the drainage tube is provided with a marking section for displaying the length, and the marking section is arranged from one end of the drainage tube to the other end.

[0010] Furthermore, the drainage tube includes a first tube body and a second tube body. The hollow part of the sponge adsorption head is wrapped around the first end of the first tube body. The fourth end of the second tube body is connected to a negative pressure device. A snap-fit ​​structure for quick installation is provided between the second end of the first tube body and the third end of the second tube body.

[0011] Furthermore, the outer side of the second end of the first tube is provided with several locking teeth, and the inner side wall of the third end of the second tube is provided with several locking grooves, the locking teeth and locking grooves forming a snap-fit ​​structure;

[0012] The outer side of the second end of the first tube is provided with a sealing ring for forming a sealing structure with the inner side wall of the third end of the second tube or with the opening of the third end of the second tube. The sealing ring is located below the retaining teeth.

[0013] An esophageal fistula device is characterized in that: the esophageal fistula device includes a negative pressure bottle and the above-mentioned adsorption structure, the air inlet of the negative pressure bottle is connected to the other end of the drainage tube, the air outlet of the negative pressure bottle is connected to a suction airbag for extracting gas from the negative pressure bottle to form a negative pressure, and the suction airbag is provided with a one-way valve.

[0014] An esophageal fistula device is characterized in that: the esophageal fistula device includes a negative pressure bottle and the above-mentioned adsorption structure, the air inlet of the negative pressure bottle is connected to the fourth end of the second tube, the air outlet of the negative pressure bottle is connected to a suction bag for extracting gas from the negative pressure bottle to form a negative pressure, and the suction bag is provided with a one-way valve.

[0015] Furthermore, the outer side of the negative pressure bottle has two symmetrical concave arc surfaces.

[0016] Furthermore, the outer side of the negative pressure bottle has a recessed area for accommodating the suction airbag.

[0017] In view of the above technical features, the present invention has the following beneficial effects:

[0018] 1. The present invention provides an adsorption structure in which a sponge adsorption head is provided on the drainage tube. The operator does not need to make the adsorption head himself, and can use it directly (that is, place the sponge adsorption head at the fistula opening of the esophageal fistula), thereby improving the efficiency of the whole process. The sponge material of the sponge adsorption head improves the adsorption effect and absorbs more liquid faster.

[0019] 2. This utility model discloses an adsorption structure in which the front section of the sponge adsorption head is conical and the rear section is cylindrical. The lengths of the front and rear sections of the sponge adsorption head are equal. The rear section of the sponge adsorption head blocks the fistula opening of the esophageal fistula. The conical front section of the sponge adsorption head faces the stomach. If gastric fluid (gastric juice) flows from the cardia into the esophagus, the front section of the sponge adsorption head can absorb the expelled gastric fluid immediately. The gastric fluid, along with the fluid seeping from the fistula opening, is drawn into the drainage tube through the air window. Under the action of the negative pressure device, the drainage tube is evacuated through the air window. The fluid adsorbed in the sponge adsorption head (such as pus, exudate, necrotic secretions, and gastric fluid) will slowly gather in the hollow part and enter the drainage tube through the air window. It is then drawn into the negative pressure device by the drainage tube and flows into the subsequent negative pressure device (such as a negative pressure bottle), thus avoiding damage to the fistula opening caused by gastric fluid and improving the safety of the fistula recovery process.

[0020] 3. The present invention provides an esophageal fistula device, which is connected to a negative pressure bottle and a suction bag for drawing out the gas in the negative pressure bottle to form a negative pressure. It is applicable in various scenarios, and is simple to operate and convenient to use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an adsorption structure in specific embodiment 1. Figure 1 (Partial magnification)

[0022] Figure 2 This is a schematic diagram of an adsorption structure in specific embodiment 1. Figure 2 .

[0023] Figure 3 yes Figure 2 Sectional view of AA.

[0024] Figure 4 This is a diagram showing the usage state of an adsorption structure in Specific Embodiment 1.

[0025] Figure 5 This is a cross-sectional view of an adsorption structure in specific embodiment 2.

[0026] Figure 6 This is a schematic diagram of the snap-fit ​​structure in specific embodiment 2.

[0027] Figure 7 This is a schematic diagram of the structure of an esophageal fistula device in specific embodiment 3. Figure 1 (Door-view angle)

[0028] Figure 8 This is a schematic diagram of the structure of an esophageal fistula device in specific embodiment 3. Figure 2 (Side view angle)

[0029] Figure 9This is a schematic diagram of the structure of an esophageal fistula device in specific embodiment 3. Figure 3 (Top view)

[0030] In the diagram: 1. Sponge suction head; 1-1. Gap; 1-2. Hollow section;

[0031] 2. Drainage tube; 2-1. One end of the drainage tube; 2-2. The other end of the drainage tube; 2-3. Air vent; 2-4. Identification section;

[0032] 3. The first pipe body; 3-1. The first end of the first pipe body; 3-2. The second end of the first pipe body; 3-3. Sealing ring;

[0033] 4. The second pipe body; 4-1. The third end of the second pipe body; 4-2. The fourth end of the second pipe body;

[0034] 5. Buckle structure; 5-1. Buckle teeth; 5-2. Buckle groove;

[0035] 6. Negative pressure bottle; 6-1. Concave arc surface; 6-2. Concave area; 6-3. Air inlet of negative pressure bottle; 6-4. Air outlet of negative pressure bottle;

[0036] 7. De-icing bag; 7-1. Trachea;

[0037] 8. Esophagus;

[0038] 9. Esophageal fistula; 9-1. Fistula opening;

[0039] 10. Stomach; 10-1. Cardia. Detailed Implementation

[0040] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0041] See Figures 1 to 4 In specific embodiment 1, an adsorption structure is provided, including a drainage tube 2 and a sponge adsorption head 1. The front section of the sponge adsorption head 1 is conical and has a hollow part 1-2 inside. One end 2-1 of the drainage tube is provided with several air windows 2-3. The hollow part 1-2 of the sponge adsorption head 1 wraps around the drainage tube 2 and covers the air windows 2-3. The front section of the sponge adsorption head 1 corresponds to the end of one end 2-1 of the drainage tube. The rear section of the sponge adsorption head 1 is cylindrical.

[0042] The sponge suction head 1 can cover the fistula opening 9-1 of the esophageal fistula 9 (i.e., the opening through which the esophageal fistula 9 connects to the esophagus 8). Especially in the later stages of treatment when the fistula opening 9-1 is small and close to the stomach 10, the sponge suction head 1 is placed inside the esophagus 8. The rear part of the cylindrical sponge suction head 1 can completely cover the fistula opening 9-1, absorbing the pus and other fluids (such as pus, exudate, and necrotic secretions) overflowing from the fistula opening 9-1, keeping the wound dry. The cone-shaped sponge suction head 1 faces the stomach 10. If gastric fluid (gastric juice) flows from the cardia 10-1 into the esophagus 8, the sponge suction head 1 can absorb the ejected gastric fluid immediately. The gastric fluid, along with the fluid absorbed by the sponge suction head 1 from the fistula 9-1, is then drawn into the drainage tube 2 through the air window 2-3. Under the action of the negative pressure device, the drainage tube 2 draws air out through the air window 2-3. The fluid absorbed in the sponge suction head 1 (such as pus, exudate, necrotic secretions, and gastric fluid) will slowly gather in the hollow part 1-2 and enter the drainage tube 2 through the air window 2-3. The drainage tube 2 will then draw air into the negative pressure device and flow into the subsequent negative pressure device (such as the negative pressure bottle 6), thus avoiding damage to the fistula 9-1 caused by the gastric fluid and improving the safety of the fistula 9-1 during the recovery process. Preferably, a number of air windows 2-3 are evenly distributed on the drainage tube 2. The air windows 2-3 can be arranged in multiple rows horizontally and vertically, or they can be distributed in a staggered manner. All of these are to absorb the liquid stored in the sponge adsorption head 1 more evenly from all directions and improve the suction efficiency.

[0043] The sponge suction head 1 has several gaps 1-1, the direction of which is parallel to the axis of the drainage tube 2. When the sponge suction head 1 enters the patient's esophagus 8, the gaps 1-1 provide some compression space, and the sponge suction head 1 will be compressed into a cone shape at the front and a cylindrical shape at the rear, making it suitable for a wider range of people. After compression, the cylindrical sponge suction head 1 is in full contact with the side wall of the esophagus 8, corresponding to the fistula opening 9-1, and fully sealing the fistula opening 9-1 to avoid gaps.

[0044] The cone-shaped sponge suction head 1 makes it easier for the sponge suction head 1 to enter the esophagus 8, reducing patient discomfort.

[0045] The length of the front section and the length of the rear section of the sponge suction head 1 are equal. If the fluid in the stomach 10 does not flow into the esophagus 8, the front and rear sections of the sponge suction head 1 work as a whole to absorb the fluid generated in the esophageal fistula 9. If the fluid in the stomach 10 flows into the esophagus 8, a section of the front section of the sponge suction head 1 can absorb the fluid in the stomach 10 earlier, preventing the fluid in the stomach 10 from spreading and rising to the fistula 9-1, corroding the fistula 9-1, causing secondary damage to the fistula 9-1, and affecting the recovery of the esophageal fistula 9.

[0046] The drainage tube 2 is provided with a marking section 2-4 for displaying the length, such as raised or recessed numerical markings, or printed numerical markings. The marking section 2-4 is arranged from one end 2-1 of the drainage tube to the other end 2-2 of the drainage tube, so that the operator can intuitively see the length of the drainage tube 2-1 that extends into the patient's esophagus 8, and grasp the depth or position of the sponge suction head 1 in the esophagus 8, thereby improving the efficiency of the use of the sponge suction head 1.

[0047] In this embodiment 1, the specific usage of the adsorption structure involves the operator placing the sponge adsorption head 11 inside the esophagus 8, corresponding to the fistula opening 9-1 of the esophageal fistula 9, using an esophagoscope. The sponge adsorption head 1 then seals the fistula opening 9-1, immediately absorbing the liquid produced by the esophageal fistula 9. Utilizing the tiny pores and channels inside the sponge, the liquid produced by the esophageal fistula 9 rises or flows within these pores (i.e., the capillary action of the sponge), enabling the sponge adsorption head 1 to adsorb the liquid. A negative pressure device connected to the other end of the drainage tube 2 then generates negative pressure, allowing the liquid adsorbed by the sponge adsorption head 1 to enter the drainage tube 2 through the air window 2-3. The drainage tube 2 then guides the liquid into the negative pressure device, completing the aspiration of liquid from the fistula opening 9-11 of the esophageal fistula 9 and the stomach 10.

[0048] In this embodiment 1, the sponge suction head 1 is a disposable item. It needs to be replaced with a new sponge suction head 1 every 4-5 days in order to continuously absorb the fluid produced by the esophageal fistula 9 and the fluid produced by the stomach 10, keep the fistula 9-1 dry, and avoid secondary damage to the fistula 9-1 by the fluid from the stomach 10.

[0049] See Figures 5 to 6In specific embodiment 2, an adsorption structure is provided. The difference between embodiment 2 and embodiment 1 is that the drainage tube 2 includes a first tube body 3 and a second tube body 4. The hollow portion 1-2 of the sponge adsorption head 1 is wrapped around the first end 3-1 of the first tube body. The fourth end 4-2 of the second tube body is connected to a negative pressure device. A snap-fit ​​structure 5 for quick installation is provided between the second end 3-2 of the first tube body and the third end 4-1 of the second tube body. The split-type drainage tube 2 design, combined with the sponge adsorption head 1, makes the entire adsorption structure more convenient and comfortable to use. The process can be simplified into three steps: First, leave the fourth end 4-2 of the second tube outside the body for later connection to the negative pressure device. Insert the third end 4-1 of the second tube into the patient's nasal cavity through the nose, then through the patient's throat and mouth, and finally remove the third end 4-1. Second, leave the second end 3-2 of the first tube outside the body for later connection to the third end 4-1. Insert the first end 3-1 of the first tube, along with the sponge suction head 1, into the esophagus 8 through the patient's mouth and throat until the sponge suction head 1 (e.g., the rear section of the sponge suction head 1) seals the fistula opening 9-1 of the esophageal fistula 9. Three steps: Connect the second end 3-2 of the first tube to the third end 4-1 of the second tube, for example, by snapping them together to form a single unit. Finally, pull the fourth end 4-2 of the second tube so that the connection between the second end 3-2 of the first tube and the third end 4-1 of the second tube (for example, the snap-fit ​​structure 5) retracts into the oral cavity and into the esophagus 8. At this time, one end of the drainage tube 2 is located inside the esophagus 8, and the other end of the drainage tube 2 is located outside the nasal cavity and connected to the negative pressure device. During this process, the sponge suction head 1 enters the esophagus 8 through the mouth and throat without passing through the nasal cavity, thus avoiding the problem of the sponge suction head 1 not being able to be inserted into the nasal cavity and improving the patient's comfort.

[0050] Preferably, the outer side of the second end 3-2 of the first tube is provided with a plurality of locking teeth 5-1, and the inner side wall of the third end 4-1 of the second tube is provided with a plurality of locking grooves 5-2. The locking teeth 5-1 and the locking grooves 5-2 form a snap-fit ​​structure 5. Simply insert the second end 3-2 of the first tube into the third end 4-1 of the second tube to quickly engage the locking teeth 5-1 with the locking grooves 5-2, thereby realizing the function of quick connection between the first tube 3 and the second tube 4. The structure is simple and the operation is convenient.

[0051] The outer surface of the second end 3-2 of the first tube is provided with a sealing ring 3-3 for forming a sealing structure with the inner wall of the third end 4-1 of the second tube. The sealing ring 3-3 is located below the retaining teeth 5-1. When the first tube 3 and the second tube 4 are quickly connected, the sealing ring 3-3 precisely seals the opening of the third end 4-1 of the second tube, or the sealing ring 3-3 can also fit against the inner wall of the third end 4-1 of the second tube to form a sealing structure. No air leakage will occur at the connection between the first tube 3 and the second tube 4, avoiding affecting the negative pressure environment inside the drainage tube 2 and avoiding affecting the adsorption effect of the adsorption structure.

[0052] See Figures 7 to 9 In specific embodiment 3, this embodiment 3 provides an esophageal fistula device, which includes an adsorption structure as described in the previous embodiment. The air inlet 6-3 of the negative pressure bottle is connected to the other end 2-2 of the drainage tube (for example, the air inlet 6-3 of the negative pressure bottle is connected to the fourth end 4-2 of the second tube). The air outlet 6-4 of the negative pressure bottle is connected to a suction bag 7 for drawing out the gas in the negative pressure bottle 6 to form a negative pressure (for example, the air outlet 6-4 of the negative pressure bottle and the suction bag 7 are connected by a trachea 7-1). The suction bag 7 ensures that the negative pressure bottle 6 can maintain a negative pressure environment, so that the use of the esophageal fistula device is not limited by the site or conditions (for example, no power is required, and the suction bag 7 can be manually pressed). The suction bag 7 is equipped with a one-way valve (not shown in the attached figure). The one-way valve can only release air and cannot allow air to enter.

[0053] The negative pressure bottle 6 has two symmetrical concave arc surfaces 6-1 on its outer side, which makes it easy for the operator to hold the negative pressure bottle 6 with one hand.

[0054] The outer side of the negative pressure bottle 6 has a recessed area 6-2 for storing the suction bag 7. The suction bag 7 can be stored in the recessed area 6-2 at any time, making the operation simple and convenient.

[0055] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this invention.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0057] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. An adsorption structure, characterized in that: The adsorption structure includes a drainage tube (2) and a sponge adsorption head (1). The front section of the sponge adsorption head (1) is cone-shaped and has a hollow part (1-2) inside. One end (2-1) of the drainage tube is provided with several air windows (2-3). The hollow part (1-2) of the sponge adsorption head (1) wraps around the drainage tube (2). The sponge adsorption head (1) covers the air windows (2-3). The front section of the sponge adsorption head (1) corresponds to the end of one end (2-1) of the drainage tube. The sponge adsorption head (1) has several gaps (1-1), and the direction of the gaps (1-1) is parallel to the axis of the drainage tube (2).

2. The adsorption structure according to claim 1, characterized in that: The cross-section of the gap (1-1) is V-shaped; the rear section of the sponge adsorption head (1) is cylindrical, and the length of the front section of the sponge adsorption head (1) is equal to the length of the rear section of the sponge adsorption head (1).

3. The adsorption structure according to claim 1, characterized in that: Several air vents (2-3) are evenly distributed on the drainage tube (2).

4. The adsorption structure according to claim 1, characterized in that: The drainage tube (2) is provided with a marking section (2-4) for displaying the length. The marking section (2-4) is arranged from one end (2-1) of the drainage tube to the other end (2-2).

5. The adsorption structure according to claim 1, characterized in that: The drainage tube (2) includes a first tube body (3) and a second tube body (4). The hollow part (1-2) of the sponge adsorption head (1) is wrapped around the first end (3-1) of the first tube body. The fourth end (4-2) of the second tube body is connected to a negative pressure device. A snap-fit ​​structure (5) for quick installation is provided between the second end (3-2) of the first tube body and the third end (4-1) of the second tube body.

6. The adsorption structure according to claim 5, characterized in that: The outer side of the second end (3-2) of the first tube body is provided with several locking teeth (5-1), and the inner side wall of the third end (4-1) of the second tube body is provided with several locking grooves (5-2). The locking teeth (5-1) and the locking grooves (5-2) form a snap-fit ​​structure (5). The outer side of the second end (3-2) of the first tube body is provided with a sealing ring (3-3) for forming a sealing structure with the inner wall of the third end (4-1) of the second tube body or with the opening of the third end (4-1) of the second tube body. The sealing ring (3-3) is located below the retaining tooth (5-1).

7. An esophageal fistula device, characterized in that: The esophageal fistula device includes a negative pressure bottle (6) and an adsorption structure as described in any one of claims 1 to 4. The air inlet (6-3) of the negative pressure bottle is connected to the other end (2-2) of the drainage tube, and the air outlet (6-4) of the negative pressure bottle is connected to a suction bag (7) for drawing out the gas in the negative pressure bottle (6) to form a negative pressure. The suction bag (7) is provided with a one-way valve.

8. An esophageal fistula device, characterized in that: The esophageal fistula device includes a negative pressure bottle (6) and an adsorption structure as described in claim 5 or 6. The air inlet (6-3) of the negative pressure bottle is connected to the fourth end (4-2) of the second tube, and the air outlet (6-4) of the negative pressure bottle is connected to a suction bag (7) for drawing out the gas in the negative pressure bottle (6) to form a negative pressure. The suction bag (7) is provided with a one-way valve.

9. An esophageal fistula device according to claim 7 or 8, characterized in that: The negative pressure bottle (6) has two symmetrical concave arc surfaces (6-1) on its outer side.

10. The esophageal fistula device according to claim 9, characterized in that: The negative pressure bottle (6) has a recess (6-2) on its outer side for accommodating the suction air bag (7).

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