Pull-type digestive tract fistula negative pressure treatment plugging device

Abstract

The utility model discloses a pull-type digestive tract fistula negative pressure treatment plugging device which comprises a drainage tube (1), a negative pressure head (5) is arranged at the upper end of the drainage tube, and the pull-type digestive tract fistula negative pressure treatment plugging device is characterized in that conical cotton (2) is sleeved on the outer wall of the drainage tube, a conical surface I is arranged below the conical cotton, a plurality of negative pressure holes (1-1) are formed in the drainage tube and are wrapped by the conical cotton, and the conical surface II is arranged below the conical cotton. The lower end of the drainage tube is connected with a traction line (4) through a traction head (3). The drawing head is elliptical and comprises an inner cylinder and a sleeve body sleeved on the outer side of the cylinder, the sleeve body internally comprises a cylindrical threaded cavity and a circular truncated cone-shaped locking cavity, the wall of the threaded cavity is in threaded fit with the outer wall of the cylinder, the section of the locking cavity is trapezoidal, an outward opening of the locking cavity is gradually increased, and a limiting bulge (3-5) is arranged in the middle of the cylinder. And the lower end of the column body penetrates through the sleeve body and is provided with a traction hole. The technical scheme has the technical effects that the plugging device can adapt to different sizes of alimentary fistula, the plugging mode is more flexible, the plugging effect is better, and the plugging device is stable and reliable when plugging alimentary fistula.

Description

Technical Field

[0001] This invention relates to surgical medical auxiliary equipment, specifically a traction-type negative pressure treatment occluder for gastrointestinal fistulas. Background Technology

[0002] As is well known, a gastrointestinal fistula refers to an abnormal passage formed by the disruption of the continuity of the digestive tract. This can be caused by factors such as surgery, trauma, inflammation, or tumors. Gastrointestinal fistulas cause significant distress to patients because they can prolong hospital stays, lead to serious infections, nutritional malabsorption problems, and even death.

[0003] Hospitals often use negative pressure therapy, which promotes healing by creating a negative pressure environment around the fistula. When using negative pressure therapy, a gastrointestinal fistula occluder (occluder) is often used. The occluder is a specially designed medical device used to treat specific types of gastrointestinal fistulas. The occluder closes the fistula by continuously suctioning negative pressure, reducing the leakage of digestive fluids, promoting the healing of the fistula, and reducing related complications.

[0004] Existing occluders often have the following shortcomings: 1. Although they can block the fistula, the sealing effect is not good; 2. The size of the gastrointestinal fistula varies from patient to patient, and existing occluders cannot be completely matched. It is necessary to repeatedly measure and adjust the size of the fistula and replace it with negative pressure suction; 3. Existing occluders are unstable in their connection with the fistula and are easy to fall off, which affects the treatment effect and delays the patient's recovery. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a traction-type negative pressure occluder for gastrointestinal fistulas that offers better sealing effects, adapts to different sizes of gastrointestinal fistulas, and provides stable and reliable results. The specific solution is as follows.

[0006] A traction-type negative pressure occlusion device for digestive tract fistula treatment includes a drainage tube with a negative pressure head at the upper end. The drainage tube is characterized by having a conical cotton lining on its outer wall, a conical surface I below the conical cotton, multiple negative pressure holes on the drainage tube which are enclosed by the conical cotton, and the lower end of the drainage tube connected to a traction line via a traction head.

[0007] The tapered cotton and the drainage tube have anti-slip soft pads at their intersection surfaces.

[0008] The cone-shaped cotton has a cone surface II on top.

[0009] The conical cotton described is a polyvinyl alcohol foam wound dressing material.

[0010] The traction head is elliptical in shape, including an inner cylinder and a sleeve that fits around the outside of the cylinder. The sleeve includes a cylindrical threaded cavity and a frustum-shaped locking cavity. The wall of the threaded cavity is threaded to the outer wall of the cylinder. The locking cavity has a trapezoidal cross section that gradually increases in size as it opens outward. A limiting protrusion is provided in the middle of the cylinder. The lower end of the cylinder passes through the sleeve and has a traction hole at the end.

[0011] A negative pressure hole is added to the drainage tube above the conical cotton.

[0012] Compared with existing technologies, this technical solution has the advantages of adapting to different sizes of gastrointestinal fistulas, more flexible sealing methods, better sealing effect and stability and reliability, which helps to achieve better negative pressure effect and promote the healing of fistula. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the conical cotton according to an embodiment of the present invention;

[0015] Figure 3 This is a schematic cross-sectional view of the traction head according to an embodiment of the present invention.

[0016] Explanation of reference numerals in the attached diagram: 1. Drainage tube; 1-1. Negative pressure hole; 2. Conical cotton; 2-1. Conical surface I; 2-2. Conical surface II; 2-3. Anti-slip soft pad; 3. Traction head; 3-1. Column; 3-2. Sleeve; 3-3. Annular wall; 3-4. Traction hole; 3-5. Limiting protrusion; 4. Traction line; 5. Negative pressure head. Detailed Implementation

[0017] Example 1, see appendix Figure 1-3 A traction-type negative pressure treatment occluder for digestive tract fistula includes a drainage tube 1, with a negative pressure head 5 at the upper end of the drainage tube. The drainage tube is characterized by having a conical cotton 2 fitted on its outer wall, with a conical surface I2-1 below the conical cotton. The drainage tube has multiple negative pressure holes 1-1 enclosed by the conical cotton, and the lower end of the drainage tube is connected to a traction line 4 via a traction head 3.

[0018] The conical cotton and the drainage tube have anti-slip soft pads 2-3 at their intersection surfaces. These anti-slip soft pads are ultra-thin silicone films fixed to the inner wall of the conical cotton. The purpose of these pads is to increase the friction between the conical cotton and the drainage tube, preventing slippage.

[0019] The conical cotton has a conical surface II2-2 on top. The function of conical surface II is to reduce resistance during reverse traction, making it easier to pull the conical cotton out in the reverse direction after negative pressure therapy. Conical surface I serves the dual purpose of facilitating traction and sealing the fistula.

[0020] The conical cotton described is a polyvinyl alcohol foam wound dressing material. This material is characterized by its soft texture, rapid liquid absorption, strong water retention capacity, safety, non-toxicity, and low lint shedding, enabling better management of wound tissue exudate.

[0021] The traction head is elliptical in shape, including an inner cylinder and a sleeve that fits around the outside of the cylinder. The sleeve includes a cylindrical threaded cavity and a frustum-shaped locking cavity. The wall of the threaded cavity is threaded to the outer wall of the cylinder. The locking cavity has a trapezoidal cross section that gradually increases in size as it opens outward. A limiting protrusion 3-5 is provided in the middle of the cylinder. The lower end of the cylinder passes through the sleeve and has a traction hole at the end.

[0022] A negative pressure hole is added to the drainage tube above the conical cotton. The choice between adding a negative pressure hole only inside the conical cotton or adding a negative pressure hole to the drainage tube above the conical cotton is determined by medical staff based on the patient's condition.

[0023] The negative pressure holes of the traction head, tapered cotton, and drainage tube in this device are rounded.

[0024] The usage of this technical solution is as follows:

[0025] Preparation: Place the conical cotton tube at a suitable position near the lower end of the drainage tube (leaving 2-3cm at the front end), and connect the upper end of the drainage tube to the negative pressure suction device through the negative pressure head;

[0026] Sealing the digestive tract fistula: (1) For patients with a relatively good degree of digestive tract opening, the drainage tube can be directly inserted from the patient's mouth or anus to the site of the digestive tract fistula. Then, a miniature forceps is inserted through the endoscopic forceps channel to pull the traction head out from the digestive tract fistula opening, and the fistula opening is sealed with conical cotton. (2) For patients with a low degree of digestive tract opening and who are not easy to insert a tube, an endoscope can be used to send the traction line from the mouth or anus to the fistula opening, and then the traction line can be used to pull the drainage tube. Alternatively, an endoscope can be used to enter the site of the digestive tract fistula from the mouth or anus, and another traction line can be led from the fistula opening to the patient's body. Then, the two traction lines are connected, and the drainage tube is pulled with the help of the traction line. When necessary, the conical cotton can also be pushed with the help of the endoscope. The traction method is not limited, and medical staff can flexibly choose and adjust according to the actual situation of the patient.

[0027] Further explanation of this technical solution:

[0028] 1. The conical cotton design better adapts to the shape of the fistula. Because of its cone shape, controlling the depth of insertion into the fistula maximizes the contact area between the cotton and the fistula opening. This means the cotton better fills the fistula, sealing fistulas of different sizes, reducing gas and liquid leakage, and maintaining a negative pressure effect. This is very helpful in promoting fistula healing, thereby improving treatment outcomes. It's important to note that since the object being sealed is a human organ, absolute sealing is not necessary. Absolute sealing often requires high pressure and tight contact, which can damage the organ. Sealing a digestive tract fistula aims to create a relatively negative pressure environment at the fistula site to promote healing. This device achieves the effect of improving the seal and accelerating healing without harming health.

[0029] 2. The addition of traction lines provides extra mechanical traction, achieving a dual effect of traction and adjustment: Firstly, it offers a more flexible and convenient traction method, facilitating the introduction of the conical cotton from the oral cavity to the fistula site; secondly, it helps to fix the conical cotton, ensuring close contact between the sponge and the fistula and preventing its displacement during treatment. By controlling the traction lines, doctors can fine-tune the position of the sponge according to the actual situation of the fistula, addressing changes in the size or shape of the fistula and ensuring the accuracy and effectiveness of the treatment; thirdly, the traction lines also facilitate the removal or replacement of the sponge, making the operation more precise and controllable.

[0030] 3. The traction head is oval-shaped, which serves several purposes: firstly, it facilitates passage through the digestive tract, improving traction smoothness; secondly, it can seal the end of the drainage tube, enhancing negative pressure; and thirdly, its oval shape will not cause harm to the body. The traction head is also relatively easy to fix: first, insert a portion of the column into the end of the drainage tube, then install the sleeve using a threaded connection. The drainage tube is embedded in the locking cavity between the column and the sleeve. Because the locking cavity has a trapezoidal cross-section, rotating the sleeve continuously tightens the drainage tube wall, thus achieving a locking effect.

[0031] 4. The traction head usually has a good fastening effect. However, in order to prevent emergency situations, a limiting protrusion is provided in the middle of the column. The limiting protrusion can prevent the sleeve from slipping off the top of the column. If the sleeve slips off the bottom, it will be restricted to the traction line and will not cause harm due to small parts falling into the human body.

[0032] The directional terms "up," "down," "top," and "bottom" recorded in this scheme are based only on the appendix. Figure 1 The location is indicated to facilitate recording and understanding.

[0033] In summary, the use of this technical solution in negative pressure therapy for gastrointestinal fistulas provides a more ideal method for fistula closure and resolution, which helps to achieve better negative pressure effects, promotes fistula healing, and reduces the risk of complications.

Claims

1. A negative pressure treatment plug for a pull-type digestive tract fistula, comprising a drainage tube (1), the upper end of the drainage tube being provided with a negative pressure head (5), characterized in that, The outer wall of the drainage tube is sleeved with conical cotton (2), the lower part of the conical cotton is provided with a conical surface I (2-1), the upper part of the conical cotton is provided with a conical surface II (2-2), a plurality of negative pressure holes (1-1) are formed in the drainage tube and are wrapped in the conical cotton, and the lower end of the drainage tube is connected with a traction line (4) through a traction head (3).

2. The traction gastro-intestinal fistula negative pressure therapy occluder of claim 1, wherein, The intersection surface of the conical cotton and the drainage tube is provided with an anti-skid soft patch (2-3), the anti-skid soft patch is a silica gel film and is fixed to the inner wall of the conical cotton.

3. The traction gastro-intestinal fistula negative pressure therapy occluder of claim 1, wherein, The conical cotton is a polyvinyl alcohol foam wound protection material.

4. The traction gastro-intestinal fistula negative pressure therapy occluder of claim 1, wherein, The traction head is oval-shaped, includes an inner cylinder and a sleeve body sleeved outside the cylinder, the sleeve body includes a cylindrical threaded cavity and a circular truncated cone-shaped locking cavity, the threaded cavity wall is threadedly connected with the outer wall of the cylinder, the locking cavity has a trapezoidal cross section and is gradually increased in size from the inside to the outside, a limiting protrusion (3-5) is arranged in the middle of the cylinder, the lower end of the cylinder penetrates through the sleeve body and is provided with a traction hole at the end.

5. The traction gastro-intestinal fistula negative pressure therapy occluder of claim 1, wherein, The upper part of the drainage tube is additionally provided with negative pressure holes.

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