Endoscopic snare device
By designing a gastrointestinal endoscope snare device with two snare wires connected to a fused ball, and using titanium clips to fix the wound edge and then fused by electricity, the problem of traditional snare wires being difficult to remove was solved, and the wound was successfully closed and completely removed.
Patent Information
- Application Number
- CN202520857910.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-08-04
- Estimated Expiration
- 2035-04-30
AI Technical Summary
Traditional loop wires have an integral ring structure, making them difficult to remove from titanium clips, resulting in unsuccessful closure of large wounds under endoscopy.
The design incorporates two snare wires connected by a fused ball. Titanium clips are used to fix the edge of the wound. After the fused point is fused by electricity, the snare wires are pulled out, thus closing the wound and removing the wire completely.
After closing a large wound under endoscopy, the loop wire was successfully removed, ensuring the wound closure was assisted.
Smart Images
Figure CN224584838U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically to a digestive endoscope snare device. Background Technology
[0002] As an important auxiliary instrument in endoscopic surgery, the snare device traditionally consists mainly of a snare wire, a snare, and an operating handle. When dealing with large endoscopic wounds, the snare device is needed to assist in wound closure. However, because the current snare wire is a single, looped structure, it is difficult to remove the snare wire from between the titanium clips after assisting in wound closure, leading to unsuccessful wound closure. Utility Model Content
[0003] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a snare device for digestive endoscopy. This device has the advantage of allowing the snare wire to be completely removed from the titanium clips after assisting in wound closure, thus achieving auxiliary wound closure. This solves the problem of needing a snare device to assist in wound closure when dealing with large endoscopic wounds. However, because the current snare wire is a single, loop-shaped structure, it is difficult to remove the snare wire from between the titanium clips after assisting in wound closure, leading to unsuccessful auxiliary wound closure.
[0004] (II) Technical Solution To achieve the above-mentioned assisted wound closure, the snare wire can be completely removed from the titanium clip to achieve the purpose of assisted wound closure. The present invention provides the following technical solution: a digestive endoscope snare device, including a snare and two identical snare wires, one end of the two snare wires is connected together by a fused ball, the other end of the two snare wires is inserted into the snare, and a closed area is formed between the two snare wires; When the snare wire is placed in the wound, the snare wire is fixedly connected to the edge of the wound by a titanium clip. By tightening the snare wire, the edge of the wound is brought closer and the wound is fixed by the titanium clip. Then, an electric current is applied to the snare wire to break the fused ball, and the two snare wires are pulled out.
[0005] Preferably, the loop wire includes a pulling section and a first connecting section, a closing section, a second connecting section, and a spiral winding section connected thereto in sequence.
[0006] Preferably, the two looped wires are coupled together by a spiral winding section.
[0007] Preferably, a fusible ball is provided at the ends of the two spiral winding sections to fix the ends of the two spiral winding sections.
[0008] Preferably, the fused ball comprises a protective hemisphere consisting of two hemispheres and a fused point connecting the two protective hemispheres.
[0009] Preferably, the melting point is melted during the energization of the two loop wires.
[0010] Preferably, the melting point is made of a low-melting-point alloy.
[0011] (III) Beneficial Effects Compared with the prior art, the present invention provides a digestive endoscopy snare device, which has the following beneficial effects: This digestive endoscopy snare device utilizes the coordinated use of a snare, snare wires, a fused ball, and titanium clips. When suturing large endoscopic wounds, the wound must first be closed for better closure. The device is placed parallel to the wound, ensuring the closed area is in the center. The pulling section is then pushed inwards, gradually increasing the area of the closed region until it contacts the edge of the wound. The titanium clips then secure the closed section to the wound edge. Pulling the pulling section outwards further reduces the area of the closed region, causing the two snare wires to become parallel, further shrinking the wound area. Once the two snare wires are completely parallel, the titanium clips secure the two edges of the wound. At this point, the snare wires are trapped in the center of the titanium clips and cannot be removed. Applying electricity to the two snare wires melts the fused points, breaking the inner ends of the wires. Pulling the pulling section outwards gradually loosens the spiral section, allowing the two snare wires to be extracted from the center of the titanium clips. This allows the loop wire to be completely removed from inside the titanium clip after assisting in wound closure, thus achieving the effect of assisting in wound closure. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of a digestive endoscope snare device according to the present invention; Figure 2 This is a schematic diagram of the snare wire structure of a digestive endoscope snare device according to the present invention; Figure 3 This is an enlarged schematic diagram of the structure at point A of the digestive endoscope snare device of this utility model; Figure 4 This is a schematic diagram of the fusible ball structure of a digestive endoscope snare device according to the present invention; Figure 5 This is a schematic diagram of a digestive endoscope snare device with a reduced closed area according to the present invention. Figure 6 This is a schematic diagram showing the initial closure of the wound after using the digestive endoscope snare device of this utility model.
[0013] In the diagram: 1. Snail; 2. Snail wire; 21. Pulling section; 22. First connecting section; 23. Closing section; 24. Second connecting section; 25. Spiral winding section; 3. Fusible ball; 31. Protective hemisphere; 32. Fusible point; 4. Titanium clip; 5. Closed area. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] Please see Figure 1-6 An endoscopy snare device includes a snare 1 and two identical snare wires 2. The function of the snare 1 is to provide support and positioning for the snare wires 2, so that the two snare wires 2 can maintain a specific position and shape within the wound, thereby forming a closed area 5, which facilitates the operation on the wound.
[0016] Two loop wires 2 are connected at one end by a fused ball 3, and the other end of the two loop wires 2 is inserted into a loop 1, forming a closed area 5 between the two loop wires 2. The two loop wires 2 are identical, with one end connected by the fused ball 3 and the other end inserted into the loop 1. When placed inside a wound, they are fixed to the edge of the wound by a titanium clip 4. The doctor can tighten the loop wires 2 to bring the wound edge closer, achieving initial closure of the wound. The titanium clip 4 is then used to further fix the wound, reducing its size. After wound fixation, the device can be withdrawn after the fused ball 3 breaks, thus separating the device from the wound.
[0017] The snare wire 2 includes a pulling section 21 and a first connecting section 22, a closing section 23, a second connecting section 24, and a spiral winding section 25 connected thereto in sequence. The pulling section 21 is the part where the doctor operates externally. By pushing inward or pulling outward on the pulling section 21, the doctor can control the movement of the snare wire 2 within the wound, thereby changing the size of the closed area 5 and performing operations such as closing and opening the wound. The first connecting section 22 connects the pulling section 21 and the closing section 23, and the second connecting section 24 connects the closing section 23 and the spiral winding section 25. The closing section 23 is the part that directly contacts the edge of the wound. When the snare wire 2 is placed within the wound, the closing section 23 adheres to the edge of the wound and is fixedly connected to the edge by a titanium clip 4, achieving initial closure of the wound. The spiral winding sections 25 of the two snare wires 2 are coupled together. During device operation, when the loop wire 2 is tightened to close the wound, the spiral winding section 25 will gradually tighten as the two loop wires 2 approach each other; when it is necessary to remove the loop wire 2, as the pulling section 21 is pulled outward, the spiral winding section 25 will gradually loosen, and finally the two loop wires 2 will be separated, making it easy to remove from the middle of the titanium clip 4.
[0018] A fusible ball 3 is provided at the ends of the two spiral winding sections 25 to fix the ends of the two spiral winding sections 25. As a structure connecting the ends of the two spiral winding sections 25, the fusible ball 3 plays the role of separating the two coiled wires 2 under specific conditions.
[0019] The fusible ball 3 includes two protective hemispheres 31 and a fusible point 32 connecting the two protective hemispheres 31. The protective hemispheres 31 of the two hemispheres of the fusible ball 3 are mainly used to protect the fusible point 32 located in the middle. During the operation of the device, the protective hemispheres 31 can prevent the fusible point 32 from being prematurely damaged or accidentally melted by accidental collisions, friction or other factors, ensuring that the fusible point 32 can work normally when it needs to be energized to melt. At the same time, when melting, it can also keep the molten metal in the protective hemispheres 31 and prevent it from falling into the patient's body.
[0020] The melting point 32 will melt during the energization of the two loop wires 2. The melting point 32 is made of a low-melting-point alloy; when the two loop wires 2 are energized, the heat generated by the current will cause the melting point 32 to reach its melting point and melt. This allows the two loop wires 2 to be disconnected without damaging the fixation of the titanium clip 4 to the wound, enabling the loop wires 2 to be pulled out from between the titanium clips 4, thus achieving the purpose of completely removing the device from the wound.
[0021] The melting point 32 is made of a low-melting-point alloy. In this patent, the melting point 32 is made of Wood's alloy, which is an alloy composed of bismuth, lead, tin and cadmium, with a melting point of approximately 70°C.
[0022] Working Principle: When suturing large endoscopic wounds, the wound must first be closed for better suturing. The device is placed in a plane parallel to the wound, with the closed area 5 located in the center. The pulling section 21 is then pushed inwards, gradually increasing the area of the closed area 5 until the closing section 23 contacts the edge of the wound. The closing section 23 is then fixed to the edge of the wound using titanium clips 4. The pulling section 21 is then pulled outwards, gradually decreasing the area of the closed area 5, and the two loop wires 2 gradually become parallel, further reducing the wound area. Once the two loop wires 2 are completely parallel, the two edges of the wound are fixed using titanium clips 4. At this point, the loop wires 2 are trapped in the center of the titanium clips 4 and cannot be removed. By applying electricity to the two loop wires 2, the melting point 32 melts, breaking the inner ends of the two loop wires 2. Pulling the pulling section 21 outwards gradually loosens the spiral winding section 25, finally separating the loop wires 2, allowing them to be pulled out from the center of the titanium clips 4. This allows the loop wire 2 to be completely removed from the titanium clip 4 after assisting in wound closure, thus achieving the effect of assisting in wound closure.
[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A digestive endoscopic snare device, characterized by: It includes a snare (1) and two identical snare wires (2), one end of the two snare wires (2) is connected together by a fused ball (3), and the other end of the two snare wires (2) is inserted into the snare (1), forming a closed area (5) between the two snare wires (2). When the snare wire (2) is placed in the wound, the snare wire (2) is fixedly connected to the edge of the wound by the titanium clip (4). By tightening the snare wire (2), the edge of the wound is brought closer and the wound is fixed by the titanium clip (4). Then, electricity is applied to the snare wire (2) to break the fused ball (3) and the two snare wires (2) are pulled out.
2. The device of claim 1, wherein: The loop wire (2) includes a pulling section (21) and a first connecting section (22), a closing section (23), a second connecting section (24), and a spiral winding section (25) connected thereto in sequence.
3. The device of claim 1, wherein: The two looped wires (2) are coupled together by a spiral winding section (25).
4. The device of claim 2, wherein: A fused ball (3) is provided at the ends of the two spiral winding sections (25) to fix the ends of the two spiral winding sections (25).
5. The device of claim 1, wherein: The fused ball (3) includes a protective hemisphere (31) consisting of two hemispheres and a fused point (32) connecting the two protective hemispheres (31).
6. The digestive endoscope snare device of claim 5, wherein: The melting point (32) will melt during the energization of the two loop wires (2).
7. The device of claim 6, wherein: The melting point (32) is made of a low-melting-point alloy.