A retractor device for endoscopic surgery

Abstract

The utility model provides a kind of pulling device for endoscopic surgery, it includes connecting piece, and multiple pulling rings fixed on the connecting piece, multiple the pulling ring is sequentially spaced along the length direction of the connecting piece, and the intersection of adjacent two the pulling ring and the included angle is 72 °-120 °;The material of the connecting piece is inelastic material, and the material of the pulling ring is elastic material.The pulling ring of the present application is suitable for endoscopic dissection surgery, cooperates tissue clamp, according to different needs, pulls open mucosa, improves surgical field of view, and the number of tissue clamp can be reduced, the operation time is reduced, and the operation cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a traction device for endoscopic surgery. Background Technology

[0002] Endoscopic submucosal dissection (ESD) is a minimally invasive treatment method that involves using specialized instruments such as a high-frequency electrosurgical unit under endoscopic guidance to gradually peel away the lesion from the underlying normal mucosa, thereby achieving complete removal of the lesion. However, the high-frequency electrosurgical unit, as the primary instrument used in ESD, may lead to problems such as bleeding and perforation during the procedure due to poor submucosal visualization.

[0003] Compared to the current market practice of using high-frequency electrosurgical units for ESD procedures, using endoscopic tissue traction clamps allows for adjustments to the traction direction as needed during the procedure, significantly reducing ESD perforation, bleeding, and shortening the operation time.

[0004] CN221490116U discloses a lesion traction device, which connects multiple internal traction rings in series via connecting lines made of elastic material. CN118873191A discloses a traction device for digestive endoscopy, which uses multiple connecting rods to set single-point traction rings, multi-point traction rings, and anchoring rings around an adjusting ring, wherein the connecting rods, adjusting ring, single-point traction rings, multi-point traction rings, and anchoring rings are all made of elastic material.

[0005] It is evident that in existing technologies, the connectors linking multiple traction rings are all made of elastic materials, and the multiple traction rings are all mounted on these elastic connectors. Consequently, the existing design cannot provide stable and suitable tension, resulting in excessive tension after directional adjustments. Specifically, each time a traction ring is fixed, the connector is pulled, leading to an increasing elastic force on the connector. This, in turn, requires a greater force for each subsequent fixing of the traction ring, making the procedure more strenuous for the doctor and increasing the risk of tissue damage.

[0006] Therefore, it is necessary to develop a traction device that can be adjusted multiple times according to the surgical location and direction, and can always provide appropriate tension. Utility Model Content

[0007] The purpose of this invention is to provide a traction device for endoscopic surgery that can be adjusted multiple times according to the surgical position and direction, and can always provide appropriate tension.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] This utility model provides a traction device for endoscopic surgery, which includes a connector and a plurality of traction rings fixed on the connector. The plurality of traction rings are arranged sequentially at intervals along the length direction of the connector, and adjacent traction rings intersect at an angle of 72°-120°. The connector is made of a non-elastic material, and the traction rings are made of an elastic material.

[0010] According to some implementation methods, any two adjacent tension rings intersect.

[0011] According to some implementations, the included angle between any two adjacent traction rings is the same.

[0012] According to some implementations, the included angle between two adjacent traction rings is 90°-120°.

[0013] According to some embodiments, the number of traction rings is 3-12, the inner diameter of the traction rings is 2mm-10mm, and the traction rings are circular.

[0014] Furthermore, the number of the traction rings is 5-12.

[0015] According to some embodiments, the length of the connector is 4mm-34mm.

[0016] According to some embodiments, the connector is a folded thread, the two ends of which are used to connect to tissue clips.

[0017] Furthermore, the tissue clip has two fixing holes, and the two ends of the thread are respectively tied to the two fixing holes; or, the two ends of the thread are fixed to small rings, and the small rings are sleeved on the tissue clip.

[0018] Furthermore, a pull ring is provided at the fold of the connector.

[0019] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0020] The traction rings of this application are staggered and distributed on the connector, with multiple positions and directions for easy access by the surgeon. Furthermore, because each traction ring is connected by a non-elastic connector, each ring is relatively independent, and no elastic element is stretched during traction. The multi-positional and multi-directional distribution of the traction rings can meet traction needs at different distances and in different directions. By controlling the traction distance, the traction tension can be kept essentially consistent. The traction rings of this application are suitable for endoscopic dissection surgery. In conjunction with tissue clips, they can retract the mucosa according to different needs, improve the surgical field of view, reduce the number of tissue clips used, shorten surgical time, and save surgical costs. Attached Figure Description

[0021] Figure 1 A three-dimensional view of a traction device with an included angle of 90°;

[0022] Figure 2 This is the front view of the traction device with an included angle of 90°;

[0023] Figure 3 This is a side view of a traction device with an included angle of 90°.

[0024] Figure 4 A three-dimensional view of a traction device with a 90° angle mounted on a tissue clip;

[0025] Among them: 1. Connector; 2. Traction ring; L, length; α, included angle; d, spacing; 11. Line on one side; 12. Line on the other side; 3. Tissue clip; 31. Clip. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0027] In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0028] The foregoing disclosure provides many different implementations or examples for carrying out different structures of the embodiments of this utility model. To simplify the disclosure of the embodiments of this utility model, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the embodiments of this utility model. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of this utility model; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0029] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0030] This application relates to a traction device for endoscopic surgery, which includes a connector 1 and a plurality of traction rings 2 fixed on the connector 1.

[0031] Multiple tension rings 2 are arranged sequentially at intervals along the length L of the connector 1, and adjacent tension rings 2 intersect with an included angle α of 72°-120°. Adjacent tension rings 2 refer to the two tension rings 2 with the shortest spacing d. Further, any two adjacent tension rings 2 intersect. Further, the included angle α between any two adjacent tension rings 2 is the same, thus forming multiple rows of tension rings 2. Each row of tension rings 2 is located on the same plane, and the included angle α of the plane formed by two adjacent rows of tension rings 2 is the included angle α between two adjacent tension rings 2. Further, the included angle α between two adjacent tension rings 2 is 90°-120°, for example, 90°, 100°, 110°, or 120°; preferably 90° or 120°.

[0032] Figures 1 to 4 The following are examples of traction devices for endoscopic surgery with an included angle α of 90°, from example 1 to... Figure 4 As can be seen, multiple tension rings 2 are fixedly arranged along the length L of the connector 1 and around the connector 1, forming a spiral shape. Furthermore, the included angle α between any two adjacent tension rings 2 is 90°.

[0033] In some implementations, the number of tension rings 2 is 3-12, for example, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12. Preferably, the number of tension rings 2 is 5-12.

[0034] In some implementations, the inner diameter of the pull ring 2 is 2mm-10mm, such as 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm. The pull ring 2 is designed with a large inner diameter to make it easier to grip in narrow channels.

[0035] In some implementations, the traction ring 2 can be of any shape, as long as it has a through hole through which the clip 31 of the tissue clip 3 passes, including but not limited to circular, triangular, elliptical, and irregular shapes. Preferably, the traction ring 2 is annular.

[0036] In some implementations, the length L of the connector 1 is 4mm-34mm, for example, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, 31mm, 32mm, 33mm, or 34mm, etc. The distance d between two adjacent tension rings 2 is determined according to the number of tension rings 2 and the length L of the connector 1. Preferably, the distance d between two adjacent tension rings 2 is equal.

[0037] In some embodiments, the connector 1 is a folded thread, with both ends used to connect to the tissue clip 3. In some embodiments, the tissue clip 31 has two fixing holes, and the two ends of the thread are respectively tied to the two fixing holes. In other embodiments, the two ends of the thread are fixed to small rings, which are fitted onto the clamping plate 31 of the tissue clip 3.

[0038] Figures 1 to 4 The illustrated traction device shows a schematic diagram of a folded thread as connector 1. Part of the traction ring 2 is fixed to the thread 11 on one side, and the other part is fixed to the thread 12 on the other side. When the traction rings 2 on different sides are pulled and fixed to the tissue, the two sides of the folded thread can separate, thus providing more fixation positions and making it easier for the doctor to operate. The length L of connector 1 refers to the length when the two threads are joined together, not the length when the two threads are pulled apart.

[0039] Figures 1 to 4 The connecting piece 1 of the traction device shown has a traction ring 2 at its folded end. This traction ring 2 can be the same as the traction ring 2 described above.

[0040] The connector 1 in this application is made of a non-elastic material, such as natural or chemical fiber wire. The pull ring 2 is made of an elastic material, such as silicone or rubber.

[0041] The fixing method between the tension ring 2 and the connector 1 can adopt conventional methods in the field, including but not limited to wrapping, gluing, knotting, etc.

[0042] The method of using the traction device of this application is as follows: The tissue clip 3 equipped with the traction device is passed through the endoscopic forceps channel, the clip 31 reaches the target position, clamps the mucosa, and then the clip 31 is released. Another tissue clip 3 is then passed through a suitable loop of the traction ring 2, closing the clip 31 and moving the clip to a position where the surgical field of view is well observed, releasing the second clip. When the position of the surgical field needs to be adjusted during the procedure, a third tissue clip 3 is used to move and release it through other suitable traction rings 2. The appropriate traction rings 2 are moved sequentially using tissue clips 3 as needed.

[0043] The traction rings 2 of this application are staggered on the connector 1, distributed in multiple positions and directions, making them easy for doctors to hook. Furthermore, since each traction ring 2 is connected by a non-elastic connector 1, each traction ring 2 is relatively independent, and no elastic element is stretched during traction. Moreover, the multi-positional and multi-directional distribution of the traction rings 2 can meet traction needs at different distances and in different directions. By controlling the traction distance, the traction tension can be kept essentially consistent. The traction rings 2 of this application are suitable for endoscopic dissection surgery. Combined with tissue clips 3, they can retract the mucosa according to different needs, improve the surgical field of vision, and reduce the number of tissue clips 3 used, thus shortening surgical time and saving surgical costs.

[0044] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A traction device for endoscopic surgery, comprising a connector (1) and a plurality of traction rings (2) fixed on the connector (1), characterized in that: Multiple traction rings (2) are arranged sequentially at intervals along the length (L) direction of the connector (1), and two adjacent traction rings (2) intersect with an included angle (α) of 72°-120°; the connector (1) is made of a non-elastic material, and the traction rings (2) are made of an elastic material.

2. The traction device for endoscopic surgery according to claim 1, characterized in that: Any two adjacent tension rings (2) intersect.

3. The traction device for endoscopic surgery according to claim 1, characterized in that: The included angle (α) between any two adjacent tension rings (2) is the same.

4. The traction device for endoscopic surgery according to any one of claims 1 to 3, characterized in that: The included angle (α) between two adjacent tension rings (2) is 90°-120°.

5. The traction device for endoscopic surgery according to any one of claims 1 to 3, characterized in that: The number of the traction rings (2) is 3-12, the inner diameter of the traction rings (2) is 2mm-10mm, and the traction rings (2) are circular.

6. The traction device for endoscopic surgery according to claim 5, characterized in that: The number of the traction rings (2) is 5-12.

7. The traction device for endoscopic surgery according to claim 1, characterized in that: The length (L) of the connector (1) is 4mm-34mm.

8. The traction device for endoscopic surgery according to claim 1, characterized in that: The connector (1) is a folded thread, and the two ends of the thread are used to connect with the tissue clip (3).

9. The traction device for endoscopic surgery according to claim 8, characterized in that: The tissue clip (3) has two fixing holes on its clip (31), and the two ends of the thread are respectively tied to the two fixing holes; or, the two ends of the thread are fixed to a small ring, and the small ring is sleeved on the clip (31) of the tissue clip (3).

10. The traction device for endoscopic surgery according to claim 8, characterized in that: The connector (1) is provided with a pull ring (2) at the fold.

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