A clamp traction resection composite device suitable for endoscopic resection of submucosal tumors

Abstract

This utility model relates to a clamping and traction resection composite device suitable for endoscopic resection of submucosal tumors, comprising: a double-lumen tube having a first cavity and a second cavity; a clamping and traction module, comprising: a clamp rod disposed within the first cavity; a clamp located outside the first cavity and connected to one end of the clamp rod, the clamp comprising multiple clamping plates rotatably connected to the clamp rod; a clamping and traction handle located outside the first cavity and connected to the other end of the clamp rod; and a snare cutting module, comprising: a core rod disposed within the second cavity; a snare connected to one end of the core rod; and a snare handle located outside the second cavity and connected to the other end of the core rod. The clamping and traction module of this utility model clamps the submucosal tumor, pulls it back to make the lesion protrude, and then cuts the submucosal tumor by contracting the snare. The operation is simple, the complete resection rate is high, and the efficiency and safety of the surgery are improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a clamping and traction resection composite device suitable for endoscopic resection of submucosal tumors. Background Technology

[0002] With the widespread use of digestive endoscopy, more and more gastrointestinal tumors are being discovered, most of which are small polyps or submucosal tumors. Current resection methods include biopsy forceps removal or snare cutting. Biopsy forceps carry risks of incomplete removal, high residual rates, and high recurrence rates, while snares are less maneuverable and difficult to completely remove in certain areas, making them more challenging for junior physicians.

[0003] Furthermore, for submucosal lesions, endoscopic submucosal dissection (ESD) is required, which requires higher technical skills, is more difficult, and carries greater risks of bleeding and perforation.

[0004] Patent CN101961262A discloses a medical multifunctional snare, including a snare and a snare handle connected by a metal wire, a double-lumen tube, and a polyp grasper and a polyp grasper handle connected by a metal wire. The double-lumen tube is fixedly connected to the snare handle and the polyp grasper handle. The metal wire connecting the snare and the snare handle passes through one lumen of the double-lumen tube, and the metal wire connecting the polyp grasper and the polyp grasper handle passes through the other lumen of the double-lumen tube. However, the above patent is only applicable to the removal of gastrointestinal polyps. Gastrointestinal polyps and submucosal tumors have significantly different morphologies. Submucosal tumors are generally located under the mucosa and covered with normal mucosal tissue, making them difficult to cut with a snare. Polyps, on the other hand, are usually pedunculated masses connected to the mucosa by a thin stalk, making them easy to cut with a snare. Utility Model Content

[0005] The purpose of this invention is to overcome at least one of the defects of the prior art and provide a clamping and traction resection composite device suitable for endoscopic resection of submucosal tumors.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A clamping and traction resection device suitable for endoscopic resection of submucosal tumors, comprising:

[0008] A dual-lumen tube, wherein the dual-lumen tube has a first cavity and a second cavity;

[0009] The clamping and traction module includes:

[0010] A clamp rod is installed within the first cavity;

[0011] A clamp located outside the first cavity and connected to one end of the clamp bar, the clamp comprising a plurality of clamping plates, the plurality of clamping plates being rotatably connected to the clamp bar;

[0012] A clamping traction handle located outside the first cavity and connected to the other end of the clamp rod drives the clamp rod to move outward through the clamping traction handle, causing the multiple clamping plates to close inward, thereby clamping the submucosal tumor.

[0013] The snare cutting module includes:

[0014] The core rod is located within the second cavity;

[0015] A loop connected to one end of the core rod;

[0016] The snare handle, located outside the second cavity and connected to the other end of the core rod, drives the core rod to move back and forth within the second cavity, thereby releasing or contracting the snare.

[0017] Furthermore, the side of the snare away from the clamp has an outwardly convex arc transition.

[0018] Furthermore, the angle between the snare and the second cavity is 30° to 60°.

[0019] Furthermore, the angle between the snare and the second cavity is 45°.

[0020] Furthermore, the collar is a flexible metal collar.

[0021] Furthermore, the clamp has 2 to 4 clamping plates.

[0022] Furthermore, a portion of the first cavity near the clamp and a portion of the second cavity near the snare are arranged in parallel.

[0023] Furthermore, a portion of the first cavity near the clamping traction handle and a portion of the second cavity near the snare handle are arranged in a bifurcated pattern.

[0024] Furthermore, when the snare is outside the second cavity, the clamp is inside the snare.

[0025] Furthermore, the handle of the snare is also equipped with a power supply connector.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] (1) This utility model provides a clamping and traction resection composite device suitable for endoscopic resection of submucosal tumors. The clamping and traction module of the device clamps the submucosal tumor and then pulls it back, causing the lesion to bulge. Then, the submucosal tumor is cut by the contraction snare. The operation is simple, the complete resection rate is high, and the efficiency (about 10 minutes) and safety of the operation are improved.

[0028] (2) This utility model provides a clamping and traction resection composite device suitable for endoscopic resection of submucosal tumors. The side of the snare away from the clamp has an outward convex arc transition, which makes it easier for the snare to better enclose the submucosal tumor.

[0029] (3) This utility model provides a clamping and traction resection composite device suitable for endoscopic resection of submucosal tumors. The angle between the snare and the second cavity of the device is 30° to 60°, which can avoid the influence of the field of view of the clamping and traction module on the existing vertical snare, and facilitate the snare to extend smoothly from the second cavity and surround the tumor. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a clamping and traction resection composite device suitable for endoscopic resection of submucosal tumors in the embodiment;

[0031] Figure 2 This is a cross-sectional view of the clamp-traction resection composite device suitable for endoscopic resection of submucosal tumors in the embodiment;

[0032] Figure 3 This is a partial view of the clamp-traction resection composite device suitable for endoscopic resection of submucosal tumors in the embodiment;

[0033] The numbers in the diagram indicate: 1-clamping traction handle; 2-first cavity; 3-clamp; 4-latch; 5-double cavity tube; 6-second cavity; 7-power supply connector; 8-latch handle. Detailed Implementation

[0034] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0035] Example

[0036] This embodiment provides a clamping and traction resection device suitable for endoscopic resection of submucosal tumors. See the detailed structure below. Figure 1-3 The system includes: a double-lumen tube 5, wherein the double-lumen tube 5 has a first cavity 2 and a second cavity 6;

[0037] The clamping and traction module includes: a clamping rod disposed within the first cavity 2; a clamping clamp 3 located outside the first cavity 2 and connected to one end of the clamping rod, the clamping clamp 3 including multiple clamping plates, the multiple clamping plates being rotatably connected to the clamping rod; and a clamping and traction handle 1 located outside the first cavity 2 and connected to the other end of the clamping rod. The clamping and traction handle 1 drives the clamping rod to move outward, causing the multiple clamping plates to close inward, thereby clamping the submucosal tumor.

[0038] The snare cutting module includes: a core rod disposed in the second cavity 6; a snare 4 connected to one end of the core rod; and a snare handle 8 located outside the second cavity 6 and connected to the other end of the core rod. The snare handle 8 drives the core rod to move back and forth in the second cavity 6, thereby causing the snare 4 to release or retract.

[0039] In this embodiment, the side of the snare 4 away from the clamp 3 has an outwardly convex arc transition, which makes it easier for the snare to better enclose the submucosal tumor.

[0040] In this embodiment, the angle between the snare 4 and the second cavity 6 is 30° to 60°; preferably, the angle between the snare 4 and the second cavity 6 is 45°, which can avoid the influence of the field of vision of the clamping traction module on the existing vertical snare, and facilitate the snare to extend smoothly from the second cavity and surround the tumor.

[0041] In this embodiment, the collar 4 is a flexible metal collar.

[0042] In this embodiment, the clamp 3 has 2 to 4 clamping pieces. The side of each clamping piece that abuts against the submucosal tumor has clamping teeth to better clamp the submucosal tumor.

[0043] In this embodiment, a portion of the first cavity 2 near the clamp 3 and a portion of the second cavity 6 near the snare 4 are arranged in parallel.

[0044] In this embodiment, a portion of the first cavity 2 near the clamping traction handle 1 and a portion of the second cavity 6 near the snare handle 8 are arranged in a bifurcated pattern.

[0045] In this embodiment, when the snare 4 is outside the second cavity 6, the clamp 3 is inside the snare 4.

[0046] In this embodiment, the snare handle 8 is also provided with a power supply connector 7. The power supply connector 14 is connected to the snare 4 through the core rod.

[0047] Working principle:

[0048] Once the lesion is detected during endoscopic examination, the device is inserted through the endoscopic channel and positioned at the lesion site. The clamp 3 of the clamping traction module is used to grasp the lesion and pull it back, ensuring that the lesion is fully entered into the operating area. Then, the snare 4 of the snare cutting module is pushed down to the root of the lesion. After the snare 4 completely constricts the normal tissue surrounding the tumor, electroresection is performed. After the lesion is completely removed, the lesion is retrieved completely by pulling back the clamping traction module or by withdrawing the entire device.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A combined device for endoscopic submucosal tumor resection by using a clamp and traction, characterized in that, include: A double-lumen tube (5) having a first cavity (2) and a second cavity (6) inside; The clamping and traction module includes: A clamp rod is installed in the first cavity (2); A clamp (3) located outside the first cavity (2) and connected to one end of the clamp bar, the clamp (3) including a plurality of clamping pieces, the plurality of clamping pieces being rotatably connected to the clamp bar; The clamping traction handle (1), located outside the first cavity (2) and connected to the other end of the clamp rod, drives the clamp rod to move outward through the clamping traction handle (1), causing the multiple clamping plates to close inward, thereby clamping the submucosal tumor; The snare cutting module includes: A core rod is installed within the second cavity (6); A loop (4) connected to one end of the core rod; The snare handle (8), located outside the second cavity (6) and connected to the other end of the core rod, drives the core rod to move back and forth in the second cavity (6), thereby causing the snare (4) to release or contract.

2. The combined device for snare traction resection of submucosal tumor under endoscope according to claim 1, wherein, The snare (4) has an outwardly convex arc transition on the side away from the clamp (3).

3. The combined device for snare traction resection of submucosal tumor under endoscope according to claim 1, characterized in that, The angle between the snare (4) and the second cavity (6) is 30° to 60°.

4. The combined device for snare traction resection of submucosal tumor under endoscope according to claim 1 or 3, characterized in that, The angle between the snare (4) and the second cavity (6) is 45°.

5. The combined device for snare traction resection of submucosal tumor under endoscope according to claim 1, wherein, The ring (4) is a flexible metal ring.

6. The clamping and traction resection composite device for endoscopic resection of submucosal tumors according to claim 1, characterized in that, The clamp (3) has 2 to 4 clamping plates.

7. The clamping and traction resection composite device for endoscopic resection of submucosal tumors according to claim 1, characterized in that, A portion of the first cavity (2) near the clamp (3) is arranged in parallel with a portion of the second cavity (6) near the snare (4).

8. The clamping and traction resection composite device for endoscopic resection of submucosal tumors according to claim 1, characterized in that, A portion of the first cavity (2) near the clamping traction handle (1) and a portion of the second cavity (6) near the snare handle (8) are arranged in a bifurcated pattern. 9.The clamp traction resection composite device for endoscopic submucosal tumor resection according to claim 1, wherein, When the snare (4) is outside the second cavity (6), the clamp (3) is inside the snare (4).

10. The combined device for snare traction resection of submucosal tumor under endoscope according to claim 1, wherein, The snare handle (8) is also provided with a power supply connector (7).

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