Traction device for the removal of submucosal tumors in the digestive tract

Abstract

The utility model provides a traction device for removing submucosal tumors of the digestive tract, comprising an elastic traction belt, a plurality of traction holes arranged along the length direction on the surface of the traction belt, a water conduit built into the elastic traction belt, the water conduit being connected to a water bag fixed at the front end of the elastic traction belt, and the tail end of the water conduit passing through the tail end of the elastic traction belt and connected to a one-way valve. The utility model is simple to manufacture, can give full play to the role of efficient and convenient auxiliary submucosal tumor removal surgery, quickly, accurately and safely perform submucosal peeling, can also perform gravity traction and internal traction, has multiple traction functions, effectively reduces the time of submucosal tumor removal surgery and anesthesia, reduces the cost of surgery and the risk of surgery-related complications, improves the safety of submucosal tumor removal surgery, improves efficiency, and assists in the smooth completion of difficult submucosal tumor removal surgery.

Description

Technical Field

[0001] The utility model relates to a traction auxiliary device for endoscopic surgery, in particular to a traction device for removing a submucosal tumor of the digestive tract. Background Art

[0002] Submucosal tumors of the digestive tract include both benign tumors (such as leiomyoma, lipoma, schwannoma, fibroma) and malignant tumors (such as stromal tumors, carcinoids, and leiomyosarcomas). This type of lesion was previously treated mainly with surgical resection, but with the development of minimally invasive endoscopic treatment technology, endoscopic resection has gradually been widely used. Clinically, endoscopic submucosal dissection (ESD), endoscopic submucosal tumor excision (ESE), or endoscopic full-thickness resection (EFR) can all effectively remove the lesions. Compared with surgery, these endoscopic minimally invasive treatments have the advantages of less trauma, faster recovery, and lower costs.

[0003] Endoscopic surgical methods vary according to the morphology and growth location of the tumor, but all require a clear endoscopic field of view during surgery. Tumors in hidden locations that are limited by the endoscopic field of view are likely to be incompletely removed, increasing the risk of bleeding. Tumors that originate from the muscularis propria and grow beneath the serosa and are tightly adhered to the serosa will be "actively" perforated during surgery, which can easily limit the field of view and seriously affect the surgical process. The tumor that has been detached after perforation can also easily move freely outside the vascular cavity of the digestive tract, thereby prolonging the operation time and even inducing complications such as abdominal infection, increasing the patient's pain and the risk of surgery.

[0004] Traction-assisted techniques involve pulling the lesion with special devices to expose the submucosal layer of the lesion, thereby facilitating endoscopic dissection. Currently available traction-assisted techniques include metal clip wire combined traction technique, metal clip elastic ring combined traction technique, SO metal clip traction technique, magnetic anchor technique, etc.

[0005] The utility model with the existing patent application number CN201120282508.7 is provided with a connecting device for connecting a heavy object. The connecting device is used to connect a heavy object to the incised lesion tissue and use gravity for traction. The metal clip elastic ring combined with traction technology has certain limitations on the surgical operable space and is difficult to apply to lesions in the gastroesophageal junction, pyloric duct and other parts. The SO metal clip traction device is complex to manufacture and difficult to adjust the length. The magnetic anchor technology and clamp traction technology are currently only in the animal experiment stage. Utility Model Content

[0006] The utility model aims to provide a digestive tract submucosal tumor removal traction device to reduce the operation time of endoscopic surgery, reduce the operation risk, and improve the safety and efficiency of the operation.

[0007] The technical solution adopted by the utility model is:

[0008] A traction device for removing submucosal tumors of the digestive tract is characterized in that it comprises an elastic traction belt, a plurality of traction holes arranged along the length direction on the surface of the elastic traction belt, a water guide tube is built into one side of the elastic traction belt, the water guide tube is connected to a water bag fixed at the front end of the traction belt, and the tail end of the water guide tube passes through the tail end of the traction belt and is connected to a one-way valve.

[0009] The length dimension of each traction hole is 0.2-0.5 cm.

[0010] The water bag is made of elastic material and forms a spherical shape after being filled with water.

[0011] The diameter of the water bag after filling is 1-4 cm, and the volume is 0.5 ml-30 ml.

[0012] Wherein, the elastic traction belt is a rubber tube.

[0013] Wherein, the water pipe is made of elastic material.

[0014] The water conduit and the elastic traction belt are an integrally formed structure.

[0015] The width of the elastic traction belt is 0.2-0.4 cm, and the thickness of the elastic traction belt is 0.1-0.3 cm.

[0016] The advantages of the utility model are: simple production, can give full play to the role of efficient and convenient auxiliary submucosal tumor resection surgery, quickly, accurately and safely perform submucosal dissection, can also perform gravity traction and internal traction, have multiple traction functions, effectively reduce the time of submucosal dissection surgery and anesthesia, reduce surgical costs and the risk of surgery-related complications, improve the safety of submucosal dissection surgery, improve efficiency, and assist in the smooth completion of difficult submucosal dissection surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural principle diagram of a digestive tract submucosal tumor removal traction device of the utility model (water bag filled state).

[0018] Figure 2 It is a structural principle diagram of a digestive tract submucosal tumor removal traction device of the utility model (water bag is in a deflated state).

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of an elastic traction belt.

[0020] Figure 4 It is a schematic diagram of the use state of the utility model when it is applied to the gravity traction of the lesion.

[0021] Figure 5It is a schematic diagram of the use state of the utility model when it is applied to extracorporeal traction of lesions.

[0022] Figure 6 It is a schematic diagram of the use state of the utility model when it is applied to traction inside a lesion body.

[0023] Explanation of the reference numerals: elastic traction belt 11; traction hole 12; elastic traction belt tip 13; elastic traction belt tail 14; water guide tube 21; water bag 22; one-way valve 23, traction belt hollow side 24; lesion 31; tissue clamp 32; digestive tract wall 33; oral cavity 34; sterile items 35; traction belt width B; traction belt thickness D. DETAILED DESCRIPTION

[0024] The utility model provides a traction device for removing submucosal tumors in the digestive tract, such as Figure 1 , Figure 2 , Figure 3 As shown, the main body is an elastic traction belt 11 (preferably a rubber belt) with good elasticity. The surface of the elastic traction belt 11 has a plurality of traction holes 12 arranged along the length direction. The length direction dimension of each traction hole 12 is preferably 0.2-0.5 cm. The width B of the elastic traction belt 11 is set to 0.2-0.4 cm. The thickness D of the elastic traction belt 11 is set to 0.1-0.3 cm. It is used to achieve traction of the lesion during submucosal tumor resection without affecting the surgical field of view. One side of the elastic traction belt 11 is a hollow structure. The hollow side 24 of the traction belt has a diameter slightly larger than the other side. The hollow side 24 of the traction belt has a built-in water pipe 21 made of elastic material (preferably, the water pipe 21 and the elastic traction belt 11 are an integrated structure). The water pipe 21 is connected to a water bag 22 fixed at the front end of the elastic traction belt 11. The rear end of the water pipe 21 passes through the rear end 14 of the elastic traction belt and is connected to a one-way valve 23, which is similar to the water injection passage of the water bag at the front end of the urinary catheter; the water bag 22 is made of rubber or other elastic materials with good toughness, and has a small volume when not filled (such as Figure 2 As shown), it forms a spherical shape after being filled with water (as shown Figure 1 As shown), the maximum diameter of the water bag 22 can be 1-4 cm, and the volume can be 0.5 ml-30 ml and other specifications, so as to achieve effective traction for lesions of different sizes.

[0025] When the device is used, it is first placed outside the digestive endoscope cavity, and the tissue clip is inserted into the biopsy hole. The tissue clip extends from the tip of the endoscope insertion part, and then the tissue clip clamps the tip 13 of the elastic traction belt, and then the tissue clip retreats into the biopsy hole, and then the endoscope insertion part is inserted into the esophagus or gastrointestinal tract, and the elastic traction belt 11 is brought into the esophagus or gastrointestinal tract. When cutting the lesion, the following are several common uses:

[0026] like Figure 4As shown, a tissue clip 32 is used to fix the middle suitable part of the elastic traction band 11 to the edge of the lesion 31 through the traction hole 12 with a suitable length from the front end. The tail end 14 of the elastic traction band is outside the body. A certain amount of liquid (such as water) is injected through the one-way valve 23. After the water bag 22 at the front end 13 of the elastic traction band is filled, gravity traction of the lesion 31 can be achieved.

[0027] like Figure 5 As shown, a tissue clip 32 is used to fix the elastic traction belt 11 to the edge of the lesion 31 through a traction hole 12 at the front end 13 of the elastic traction belt, and the tail end 14 of the elastic traction belt is outside the body and connected to a sterile object 35 of a certain weight, so that the lesion 31 can be pulled outside the body.

[0028] like Figure 6 As shown, a tissue clip 32 is used to fix the tip 13 of the elastic traction band to the edge of the lesion 31 through a traction hole 12 at the tip 13 of the elastic traction band, and the tail end 14 of the elastic traction band is outside the body. A second tissue clip 32 is used to clamp another traction hole 12 at a suitable length from the tip to fix the elastic traction band 11 to the other side of the digestive tract wall 33, so that the section of the elastic traction band 11 between the two tissue clips 32 maintains a certain traction force, thereby achieving in vivo traction.

[0029] Among them, both the internal traction and the external traction of the lesion 31 can be used simultaneously in combination with gravity traction.

[0030] The utility model has been described in detail above, and the above is only a preferred embodiment of the utility model, which should not limit the scope of the implementation of the utility model. That is, all equivalent changes and modifications made based on the utility model should still fall within the scope of the patent of the utility model.

Claims

1. A traction device for removing submucosal tumors in the digestive tract, characterized in that: It includes an elastic traction belt with multiple traction holes arranged along the length direction on its surface. A water pipe is built into one side of the elastic traction belt. The water pipe is connected to a water bag fixed at the front end of the elastic traction belt. The tail end of the water pipe passes through the tail end of the elastic traction belt and is connected to a one-way valve.

2. The digestive tract submucosal tumor resection traction device according to claim 1, characterized in that: The length dimension of each traction hole is 0.2-0.5 cm.

3. The digestive tract submucosal tumor resection traction device according to claim 1, characterized in that: The water bag is made of elastic material and forms a spherical shape after being filled with water.

4. The digestive tract submucosal tumor resection traction device according to claim 3, characterized in that: The diameter of the water balloon after filling is 1-4cm and the volume is 0.5ml-30ml.

5. The digestive tract submucosal tumor resection traction device according to claim 1, characterized in that: The elastic traction belt is a rubber tube.

6. The digestive tract submucosal tumor resection traction device according to claim 1, characterized in that: The water conduit is made of elastic material.

7. The digestive tract submucosal tumor resection traction device according to claim 1, characterized in that: The water guide pipe and the elastic traction belt are an integrally formed structure.

8. The digestive tract submucosal tumor resection traction device according to claim 1, characterized in that: The width of the elastic traction belt is 0.2-0.4 cm, and the thickness of the elastic traction belt is 0.1-0.3 cm.

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