Anchor device for closing wound notch in endoscopic early cancer dissection operation

Abstract

The utility model relates to the technical field of medical instruments, and discloses an anchor device for closing a wound notch in an endoscopic premature cancer dissection operation. The device comprises a spiral upper structure, a middle straight rod structure, a round separation blade, a rotatable middle column body and a bottom structure. The spiral upper structure is formed by spirally winding a metal wire, and the top end of the spiral upper structure is pointed cone-shaped; the middle straight rod structure is connected with the bottom end of the spiral upper structure; the round separation blade is arranged at the joint of the middle straight rod structure and the spiral upper structure; the rotatable middle column body is arranged on the middle straight rod structure in a sleeving manner, can rotate freely and is provided with a rope threading hole; the bottom structure is connected with the bottom end of the middle straight rod structure and comprises an upper wafer and a lower cube, and a circular groove is formed in the middle of the lower cube. Through the unique structural design, the efficiency and the reliability of closing the notch of the wound surface in the endoscopic premature cancer dissection operation are improved, and meanwhile, the convenience of the operation and the safety of a patient are both considered.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly to the technology of endoscopic surgical instruments. Background Art

[0002] The diagnosis and treatment of early digestive tract cancers under endoscopy have been an important progress in the field of gastroenterology in recent years. As a minimally invasive treatment method, endoscopic submucosal dissection (ESD) plays an increasingly important role in the treatment of early gastric cancer, esophageal cancer, and colorectal cancer. However, the management of the wound surface after ESD has always been a challenge for clinicians.

[0003] Traditional methods for treating the wound surface after ESD mainly rely on natural healing or using metal clips for closure. These methods have some limitations: the natural healing process is slow, which may increase the risks of bleeding and perforation; while using metal clips can promote wound surface closure, but the operation is complex, and it is difficult to precisely control the degree of closure. Sometimes, multiple metal clips are required to be used in combination, increasing the operation time and cost.

[0004] In addition, there are also some deficiencies in the design of existing anchor devices. First, the fixing effect of the anchor is not ideal enough, and it is easy to loosen or fall off, affecting the effect of wound surface closure. Second, the biocompatibility of the anchor material is not good, which may cause tissue reactions or inflammation. Third, the operation of existing anchor devices is complex, and it is difficult to accurately position and adjust under the endoscope, increasing the operation difficulty for doctors and the operation time.

[0005] At the same time, there are also some problems in the structural design of existing anchor devices. For example, there is a lack of an effective mechanism to prevent excessive embedding into tissues, which may cause tissue damage; the adjustment of the pull rope angle is not flexible, affecting the effect of wound surface closure; the connection with the pushing device is not firm enough, and it may become detached during the operation; the overall size of the device is too large, making it difficult to pass through the conventional endoscopic working channel.

[0006] In addition, existing anchor devices usually require a second operation for removal, increasing the pain of patients and the medical cost.

[0007] Therefore, there is an urgent need for a new type of anchor device that can solve the above problems and improve the efficiency and reliability of closing the wound gap in endoscopic early cancer dissection surgery. Such a device should have a good tissue fixing effect, good biocompatibility, simple operation, be able to be adjusted flexibly, be firmly connected with the pushing device, have a size suitable for endoscopic operation, and preferably be able to avoid a second operation for removal. At the same time, such a device should also fully consider the safety and comfort of patients, reflecting the humanization and advancement of medical device design. Summary of the Utility Model

[0008] The purpose of the present utility model is to provide an anchor device for closing the wound gap in endoscopic early cancer resection surgery, so as to solve the problems raised in the above-mentioned background technology.

[0009] This application discloses an anchor device for closing the wound gap in endoscopic early cancer resection surgery, including:

[0010] A spiral upper structure, which is formed by helically winding a metal wire, and the top end is in a conical shape;

[0011] A middle straight rod structure, which is connected to the bottom end of the spiral upper structure;

[0012] A circular retaining piece, which is arranged at the connection of the middle straight rod structure and the spiral upper structure;

[0013] A rotatable middle cylinder, which is sleeved on the middle straight rod structure and can rotate freely around it, and the rotatable middle cylinder has a rope-passing hole;

[0014] A bottom structure, which is connected to the bottom end of the middle straight rod structure, including an upper circular plate and a lower cube, and a circular groove is formed in the middle of the lower cube;

[0015] Among them, the spiral upper structure is used for screwing into the tissue, the rotatable middle cylinder is used for adjusting the angle of the pull rope, and the bottom structure is used for connecting with the pushing device.

[0016] In a preferred example, the metal wire is a titanium wire.

[0017] In a preferred example, the number of spiral turns of the spiral upper structure is 3 - 5 turns, the pitch of each turn is 1 - 1.5 mm, and the outer diameter of the spiral is 2 - 2.6 mm.

[0018] In a preferred example, the diameter of the circular retaining piece is larger than the maximum diameter of the spiral upper structure.

[0019] In a preferred example, the diameter of the middle straight rod structure is 0.5 - 0.7 mm, and the length is 3 - 5 mm.

[0020] In a preferred example, the outer diameter of the circular retaining piece is 1.6 - 2 mm, and the thickness is 0.1 - 0.3 mm.

[0021] In a preferred example, the outer surface of the rotatable middle cylinder is provided with anti-slip lines.

[0022] In a preferred example, the rotatable middle cylinder is an unequal-sided structure, its thickness is 1.3 - 1.7 mm, the radius from the longest side to the center of the middle straight rod structure is 1 - 1.3 mm, and the radius from the shortest side to the center of the middle straight rod structure is 0.6 - 0.8 mm.

[0023] In a preferred example, the direction of the string-passing hole is perpendicular to the axis of the middle straight rod structure.

[0024] In a preferred example, the diameter of the string-passing hole on the rotatable middle cylinder is 0.4 - 0.6 mm.

[0025] In a preferred example, the diameter of the circular groove in the middle of the lower cube is smaller than the diameter of the upper circular disc.

[0026] In a preferred example, the outer diameter of the upper circular disc of the bottom structure is 2.2 - 2.6 mm, and the edge thickness is 0.1 - 0.3 mm.

[0027] In a preferred example, the lower cube of the bottom structure is a cube with a side length of 1.5 - 1.8 mm and a length of 2.3 - 2.7 mm.

[0028] In a preferred example, the radius of the circular groove in the middle of the lower cube is 0.4 - 0.6 mm.

[0029] In a preferred example, it further includes a drawstring used in combination with the string-passing hole, and the drawstring is made of an absorbable material.

[0030] In a preferred example, the overall length of the anchor device is 5 - 7 millimeters.

[0031] In a preferred example, the bottom structure is connected to the pushing device by means of snap connection, threaded connection or magnetic connection.

[0032] Compared with the prior art, the embodiments of the present invention have at least the following differences and effects:

[0033] The design of the anchor device for closing the wound gap in endoscopic early cancer resection (hereinafter simply referred to as the "anchor device") fully considers the special requirements for closing the wound gap in endoscopic early cancer resection, and its unique technical effects are reflected in both the structure and material selection.

[0034] The spiral upper structure of the anchor device is made of titanium wire, which not only has good biocompatibility, reducing the risk of postoperative complications, but also its special spiral design enables the anchor to be firmly screwed into the tissue, improving the fixation effect. The 3 - 5 turn spiral design avoids excessive tissue damage while ensuring the fixation effect. The tapered design at the top of the spiral facilitates initial puncture, making the entire insertion process smoother.

[0035] The design of the middle structure ingeniously solves multiple technical problems. The setting of the circular baffle prevents the anchor screw from being overly embedded in the tissue, facilitating subsequent removal. The innovative design of the rotatable middle cylinder allows the operator to flexibly adjust the angle of the pull rope. The anti-slip texture on its outer surface increases the friction during operation and improves the adjustment accuracy. The design that the rope-passing hole is perpendicular to the axis of the middle straight rod structure facilitates the threading and adjustment of the pull rope, and its diameter is suitable for medical suture threads of common specifications, further improving the convenience of operation.

[0036] The design of the bottom structure focuses on the connection problem with the pushing device. The design that the diameter of the middle circular groove is smaller than that of the upper circular plate increases the overall structural stability. The design of multiple connection methods increases the reliability and flexibility of the connection between the anchor screw device and the pushing device.

[0037] The size design of the entire device is very compact. The overall length of 5 - 7 mm makes it suitable for endoscopic operation and can pass through the conventional endoscopic working channel. At the same time, the sizes of all components have been carefully calculated to minimize the volume while ensuring the functions.

[0038] In addition, the pull rope used in conjunction with the rope-passing hole is made of absorbable material, which means that there is no need for a second operation to remove it, greatly reducing the pain of the patient and the medical cost.

[0039] Generally speaking, through its unique structural design and material selection, this anchor screw device effectively improves the efficiency and reliability of closing the wound gap in endoscopic early cancer resection surgery. It not only considers the convenience of surgical operation but also fully pays attention to the safety and comfort of the patient, reflecting the humanization and advancement of medical device design and having a very broad application prospect in the medical field.

[0040] A large number of technical features are recorded in the description of this utility model, distributed in various technical solutions. If all possible combinations of the technical features of this utility model (i.e., technical solutions) are to be listed, it will make the description too lengthy. To avoid this problem, each technical feature disclosed in the above-mentioned utility model content, each technical feature disclosed in the following embodiments and examples, and each technical feature disclosed in the drawings can be freely combined with each other to form various new technical solutions (these technical solutions are all regarded as having been recorded in this specification), unless the combination of such technical features is technically infeasible. For example, in one example, features A + B + C are disclosed, and in another example, features A + B + D + E are disclosed, and features C and D are equivalent technical means that play the same role. Technically, only one of them can be used and they cannot be used simultaneously. Feature E can be combined with feature C technically. Then, the solution of A + B + C + D should not be regarded as having been recorded because it is technically infeasible, while the solution of A + B + C + E should be regarded as having been recorded. Description of the Drawings

[0041] Figure 1 is a schematic structural view of an anchor device for closing the wound gap in endoscopic early cancer dissection surgery according to the first embodiment of the present utility model.

[0042] Figure 2 is another schematic structural view of an anchor device for closing the wound gap in endoscopic early cancer dissection surgery according to the first embodiment of the present utility model.

[0043] In all the drawings, the same reference numerals are used to represent the same elements or structures, where:

[0044] 3-1: Spiral upper structure

[0045] 3-2: Circular retaining plate

[0046] 3-3: Rotatable intermediate cylinder

[0047] 3-4: Lower cube Detailed Embodiments

[0048] In the following description, many technical details are presented for the reader to better understand the present application. However, those of ordinary skill in the art can understand that even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the various claims of the present application can still be implemented. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0049] Explanation of Some Concepts:

[0050] Endoscopic early cancer dissection surgery: Refers to an early cancer treatment surgery using endoscopic equipment, mainly including techniques such as endoscopic submucosal dissection (ESD). This surgical method can completely remove early cancerous lesions while preserving organ function.

[0051] Wound gap: Refers to the mucosal defect area formed after removing the diseased tissue during endoscopic early cancer dissection surgery.

[0052] Anchor device: A special device in the present invention for closing the wound gap in endoscopic early cancer dissection surgery, mainly composed of a spiral upper structure, a middle straight rod structure, a circular retaining plate, a rotatable intermediate cylinder, and a bottom structure.

[0053] Spiral upper structure: In the present application, it refers to the top structure of the anchor device, which is designed in a spiral shape and is used to screw and fix the anchor into the tissue.

[0054] Middle straight rod structure: In this application, it refers to the straight rod part connecting the spiral upper structure and the bottom structure, providing overall support.

[0055] Round baffle: In this application, it refers to the circular structure arranged at the connection of the middle straight rod structure and the spiral upper structure, used to prevent the anchor from being overly embedded in the tissue.

[0056] Rotatable middle cylinder: In this application, it refers to the freely rotatable cylinder sleeved on the middle straight rod structure, having a rope-passing hole for adjusting the angle of the pull rope.

[0057] Bottom structure: In this application, it refers to the lowermost part of the anchor device, including the upper round plate and the lower cube, used for connecting with the pushing device.

[0058] Rope-passing hole: In this application, it refers to the hole arranged on the rotatable middle cylinder for passing the pull rope.

[0059] Pull rope: In this application, it refers to the wire used in combination with the rope-passing hole, used to connect multiple anchors and finally close the wound gap.

[0060] Pushing device: In this application, it refers to the auxiliary tool used to send the anchor device into the surgical site.

[0061] Biocompatibility: It refers to the degree of compatibility when a medical device contacts human tissue. Good biocompatibility means that the device will not cause obvious adverse reactions.

[0062] Absorbable material: In this application, it refers to the material that can be gradually absorbed or degraded by the human body after completing its intended function.

[0063] To make the purpose, technical solutions and advantages of this application clearer, the following will further describe the implementation manners of this application in detail with reference to the accompanying drawings.

[0064] First Embodiment

[0065] See Figure 1 and Figure 2 For the anchor device for closing the wound gap in endoscopic early cancer dissection surgery in this embodiment, it includes:

[0066] Spiral upper structure 3-1, which is spirally wound by a metal wire and has a pointed cone at the top;

[0067] Middle straight rod structure, connected to the bottom end of the spiral upper structure 3-1;

[0068] Round baffle 3-2, arranged at the connection of the middle straight rod structure and the spiral upper structure 3-1;

[0069] A rotatable middle cylinder 3-3 is sleeved on the middle straight rod structure and can rotate freely around it. The rotatable middle cylinder 3-3 has a rope-passing hole;

[0070] A bottom structure is connected to the bottom end of the middle straight rod structure and includes an upper disc and a lower cube 3-4. A circular groove is provided in the middle of the lower cube 3-4;

[0071] Among them, the spiral upper structure 3-1 is used to screw into the tissue, the rotatable middle cylinder 3-3 is used to adjust the angle of the pull rope, and the bottom structure is used to connect with the pushing device.

[0072] This embodiment describes an anchor device for closing the wound gap in endoscopic early cancer resection surgery. Its structure and function can be understood in detail through Figure 1 and Figure 2 This anchor device is ingeniously designed by combining multiple functional components to achieve effective use in the endoscopic surgical environment.

[0073] The top of the device is a spiral upper structure 3-1, which is spirally wound by a metal wire and has a pointed cone at the top. This design enables the anchor to easily screw into the tissue and achieve stable fixation. Connected to the spiral upper structure is a middle straight rod structure, which serves as the central support of the entire device and connects each functional component.

[0074] At the connection between the middle straight rod structure and the spiral upper structure, a circular retaining plate 3-2 is provided. This circular retaining plate may play a role in preventing the anchor from being inserted into the tissue excessively, ensuring the safety of the surgery. A rotatable middle cylinder 3-3 is also sleeved on the middle straight rod structure. This cylinder can rotate freely around the middle straight rod and has a rope-passing hole. This design allows the doctor to flexibly adjust the angle of the pull rope during the surgery, increasing the flexibility of the operation.

[0075] The bottom structure of the device is connected to the bottom end of the middle straight rod structure and includes an upper disc and a lower cube 3-4. It should be noted that a circular groove is provided in the middle of the lower cube. This design may be for better connection with the pushing device. The main function of the entire bottom structure is to connect with the pushing device to ensure that the anchor can be accurately delivered to the target position.

[0076] Through this carefully designed structure, the anchor device can effectively complete its task in endoscopic early cancer resection surgery: the spiral upper structure is responsible for screwing into and fixing in the tissue, the rotatable middle cylinder allows flexible adjustment of the pull rope angle to adapt to different surgical situations, and the bottom structure ensures that the entire device can be accurately pushed to the required position. This comprehensively considered design aims to provide a flexible, effective and safe endoscopic wound closure solution.

[0077] Optionally, the wire is a titanium wire.

[0078] Optionally, the number of turns of the helical upper structure 3-1 is 3-5 turns, the pitch of each turn is 1-1.5 mm, and the outer diameter of the helix is 2-2.6 mm.

[0079] Specifically, first of all, choosing titanium wire as the material of the helical upper structure is an important consideration. Titanium, as a metal with excellent biocompatibility, is widely used in the field of medical devices. It has an excellent strength-to-weight ratio, strong corrosion resistance, and is not likely to cause rejection reactions in the human body. In the scenario of endoscopic surgery where high requirements are placed on materials, the use of titanium wire can effectively reduce the risk of postoperative complications and improve the recovery effect of patients.

[0080] Secondly, the number of turns of the helix is set to 3-5 turns. This range can ensure sufficient fixing strength without making the structure too complex or adding unnecessary volume. The design of the pitch of each turn of 1-1.5 mm may be to facilitate the smooth screwing of the anchor into the tissue while ensuring the strength of the helical structure. The range of the outer diameter of the helix of 2-2.6 mm may be determined based on the size limitation of the endoscopic working channel and actual clinical needs.

[0081] The setting of these parameters not only considers the functionality of the anchor but also takes into account the feasibility of production and the convenience of clinical use. By providing a parameter range instead of a fixed value, the designer leaves room for adjustment for different clinical needs and production conditions, increasing the flexibility and applicability of the design. This precise parameter control reflects the designer's in-depth understanding of the endoscopic surgical environment and the emphasis on improving surgical outcomes and patient safety.

[0082] Optionally, the diameter of the circular retaining plate 3-2 is greater than the maximum diameter of the helical upper structure 3-1. Optionally, the outer diameter of the circular retaining plate 3-2 is 1.6-2 mm, and the thickness is 0.1-0.3 mm.

[0083] Optionally, the diameter of the middle straight rod structure is 0.5-0.7 mm, and the length is 3-5 mm.

[0084] Optionally, the outer surface of the rotatable intermediate cylinder 3-3 is provided with anti-slip lines.

[0085] Optionally, the rotatable intermediate cylinder 3-3 is an unequal-sided structure, its thickness is 1.3-1.7 mm, the radius from the longest side to the center of the middle straight rod structure is 1-1.3 mm, and the radius from the shortest side to the center of the middle straight rod structure is 0.6-0.8 mm.

[0086] Optionally, the direction of the string hole is perpendicular to the axis of the middle straight rod structure.

[0087] Optionally, the diameter of the string-passing hole on the rotatable intermediate cylinder 3-3 is 0.4-0.6 mm.

[0088] Specifically, the design of the circular baffle 3-2 is very ingenious. Its diameter is larger than the maximum diameter of the spiral upper structure 3-1, which can effectively prevent the anchor screw from being over-inserted into the tissue and play a role of physical limit. The outer diameter of 1.6-2 mm and the thickness range of 0.1-0.3 mm ensure both a sufficient blocking area and do not significantly increase the overall volume of the device. This fine size control reflects the designer's emphasis on surgical safety.

[0089] The size design of the middle straight rod structure is also particular. The diameter of 0.5-0.7 mm and the length of 3-5 mm ensure strength while minimizing the overall volume of the device as much as possible. This slender and strong structure is beneficial to reducing interference with surrounding tissues and providing stable support for other components.

[0090] The design of the rotatable intermediate cylinder 3-3 reflects innovation in many aspects. The outer surface is provided with anti-slip patterns, which can increase the friction during operation and improve the adjustment accuracy. The design of the scalene structure (thickness 1.3-1.7 mm, the radius of the longest side 1-1.3 mm, the radius of the shortest side 0.6-0.8 mm) is to provide a larger operating space and better vision while ensuring sufficient strength.

[0091] The design of the string-passing hole is also well-considered. Its direction is perpendicular to the axis of the middle straight rod structure, and this arrangement can keep the pulling rope in the best stress direction during use. The diameter of the string-passing hole of 0.4-0.6 mm may be determined according to the specifications of common medical suture threads, which can ensure that the pulling rope passes through smoothly without causing too large a gap.

[0092] These fine design details are combined to form a highly optimized anchor screw device. The selection of each parameter achieves a balance among functionality, safety, and operational convenience, fully reflecting the designer's in-depth understanding of the endoscopic surgical environment and the unremitting pursuit of improving surgical results and patient safety.

[0093] Optionally, the diameter of the circular groove in the middle of the lower cube 3-4 is smaller than the diameter of the upper circular disc. Optionally, the radius of the circular groove in the middle of the lower cube 3-4 is 0.4-0.6 mm.

[0094] Specifically, the design of the circular groove in the middle of the lower cube 3-4 is also quite particular. The diameter of the circular groove is smaller than that of the upper circular disc. This design may be to provide a stable connection point for the pushing device while ensuring the structural strength. The smaller diameter of the circular groove can prevent the pushing device from being inserted excessively, thus avoiding interference with other functional components of the anchor.

[0095] Specifically regarding the size of the circular groove, the radius is set within the range of 0.4 - 0.6 mm. This precise size range may be based on multiple considerations: it needs to be large enough to cooperate with the pushing device, but not too large to affect the integrity of the overall structure. At the same time, this size range may also consider the feasibility of the manufacturing process and cost factors.

[0096] The combined application of these design details enables the bottom structure of the anchor device to be firmly connected to the pushing device while ensuring the strength and reliability of the overall structure. They work together to ensure that the anchor can be accurately and stably pushed to the target position without accidental detachment or dislocation during the operation.

[0097] Optionally, the outer diameter of the upper circular disc of the bottom structure is 2.2 - 2.6 mm, and the edge thickness is 0.1 - 0.3 mm.

[0098] Optionally, the lower cube 3-4 of the bottom structure is a cube with a side length of 1.5 - 1.8 mm and a length of 2.3 - 2.7 mm.

[0099] Specifically, these optional design features further detail the specific dimensions of the bottom structure of the anchor device, including the precise parameters of the upper circular disc and the lower cube 3-4. The setting of these dimensions has been carefully considered to optimize the performance and applicability of the device.

[0100] First, regarding the upper circular disc of the bottom structure, its outer diameter is set within the range of 2.2 - 2.6 mm. The selection of this size range takes into account multiple factors: it needs to be large enough to provide stable support, but not too large to increase the overall volume or affect the smoothness of passing through the endoscopic working channel. The edge thickness of the circular disc is 0.1 - 0.3 mm. This relatively thin design may be to reduce weight while ensuring sufficient strength. The thin edge may also help reduce irritation to the surrounding tissues.

[0101] Secondly, the lower cube 3-4 of the bottom structure is designed as a cube with a side length of 1.5-1.8 mm and a length of 2.3-2.7 mm. The cube shape helps to provide a stable foundation and prevent the device from rotating during use. The side length of 1.5-1.8 mm ensures sufficient volume to accommodate the necessary structures (such as the previously mentioned circular grooves) without making the overall size too large. The length of 2.3-2.7 mm may be based on the need to cooperate with other components and the consideration of the overall structural balance.

[0102] These precise dimensional parameters reflect the careful trade-offs made by the designers for each component of the anchor device. They work together to achieve the following goals: ensure that the device can smoothly pass through the endoscopic working channel; provide sufficient structural strength to withstand various stresses during the operation; optimize the connection with the pushing device to ensure the accuracy and stability of the operation; minimize the overall volume as much as possible to reduce the impact on the surrounding tissues; consider the feasibility of the manufacturing process and cost factors.

[0103] Through these delicate designs, the bottom structure of the anchor device can perform its maximum function within a limited space, providing a solid foundation for the performance and reliability of the entire device. This attention to detail reflects the high emphasis on precision and safety in the design of medical devices. The ultimate goal is to provide an excellent tool that can significantly improve the effect of endoscopic early cancer resection surgery.

[0104] Optionally, it further includes a pull cord used in conjunction with the cord-passing hole, and the pull cord is made of an absorbable material.

[0105] Optionally, the overall length of the anchor device is 5-7 millimeters.

[0106] Optionally, the bottom structure is connected to the pushing device by means of snap, thread or magnetic connection.

[0107] Specifically, first, regarding the design of the supporting pull cord. The pull cord is an important component used in conjunction with the cord-passing hole, and its main function is to connect and tighten multiple anchor devices, thereby achieving the closure of the wound gap. It is worth noting that the pull cord is specifically made of an absorbable material here. This material selection has important significance: the absorbable material can be gradually decomposed and absorbed by the human body after completing its intended function, eliminating the need for a second operation to remove it. This not only reduces the patient's pain and additional medical risks but also lowers the overall treatment cost. At the same time, using an absorbable material also avoids the risk of complications that may be brought about by the long-term retention of foreign objects.

[0108] Secondly, the overall length of the anchor device is set within the range of 5 - 7 mm. This length of 5 - 7 mm is sufficient to provide the necessary functional structure and ensure that the device can pass smoothly through the working channel of a conventional endoscope. This compact design is conducive to improving the accuracy and flexibility of the operation, while minimizing the interference to the surrounding healthy tissues.

[0109] Finally, there are multiple options for the connection method between the bottom structure and the pushing device: snap, screw or magnetic connection. This diverse connection design shows consideration for different clinical needs: snap connection may provide quick and easy loading and unloading operations, suitable for situations where the anchor needs to be replaced frequently. Screw connection may provide a more stable combination, suitable for complex surgeries that require precise control. Magnetic connection may provide a contactless and convenient connection method, which is beneficial for maintaining a clean surgical environment. This flexible design allows doctors to choose the most suitable connection method according to specific surgical needs and personal preferences, thus improving the efficiency and safety of the surgery.

[0110] In summary, these design features fully reflect the in - depth consideration of the designer for the entire process of endoscopic surgery. From material selection to size control, and then to the diversification of connection methods, every detail aims to improve the functionality, safety and applicability of the device. This comprehensive and meticulous design concept is expected to provide an efficient, safe and flexible solution for closing the wound gap in endoscopic early cancer resection surgery.

[0111] Working principle:

[0112] The anchor device of the present utility model realizes the effective closure of the wound gap in endoscopic early cancer resection surgery through its unique structural design. Its working principle involves multiple aspects, which work together to achieve the expected effect.

[0113] Firstly, the fixing principle of the device is based on the design of the spiral upper structure 3 - 1. This structure is spiral - shaped with a pointed cone at the top. During use, it is screwed into the tissue through the pushing device. The spiral design increases the contact area with the tissue and improves the fixing strength, while the pointed cone at the top facilitates the initial puncture and reduces tissue damage. To prevent the anchor from being overly embedded in the tissue, a circular stop 3 - 2 is provided at the connection between the spiral upper structure 3 - 1 and the middle straight rod structure. Its diameter is larger than the maximum diameter of the spiral structure, which not only prevents over - embedding but also provides convenience for subsequent removal.

[0114] Secondly, the device's rotatable center column 3-3 allows the operator to flexibly adjust the angle of the drawstring. This column rotates freely around the central straight rod structure, allowing the operator to precisely adjust the drawstring direction based on the shape and location of the wound. A drawstring hole is provided on the rotatable center column 3-3 for securing the drawstring, facilitating its insertion and adjustment. By connecting the drawstring to multiple anchors, the wound edges can be brought together to close the wound.

[0115] The bottom structure of the device includes a lower cube 3-4, which is designed to connect to the push device. The structural design of the lower cube 3-4 increases the stability of the connection, ensuring that the anchor can be accurately positioned and firmly implanted during the push process.

[0116] In terms of material selection, the spiral superstructure 3-1 is made of metal wire, which has good biocompatibility and reduces the risk of postoperative complications. The drawstring can be made of absorbable material, eliminating the need for secondary surgery to remove it, greatly reducing patient trauma and medical burden.

[0117] Through the combined effects of these structural designs and material selections, the device can effectively secure itself to tissue during endoscopic procedures, flexibly adjust the pull cord angle, and securely connect to the push mechanism, ultimately achieving reliable closure of wound openings. Its compact size ensures smooth passage through the endoscopic working channel, making it suitable for wound closure in various endoscopic early cancer dissection surgeries, providing a new and effective solution for clinical practice.

[0118] The advantages of the above embodiment are as follows:

[0119] The design of this anchor device fully considers the special needs of wound closure in endoscopic early cancer resection surgery, and its unique technical effects are reflected in both structure and material selection.

[0120] The helical upper structure of this anchor device is constructed from titanium wire, which not only offers excellent biocompatibility and reduces the risk of postoperative complications, but its unique helical design also allows the anchor to securely penetrate the tissue, enhancing fixation effectiveness. The 3-5 turns of the helix ensure effective fixation while avoiding excessive tissue damage. The tapered tip of the helix facilitates initial insertion and smooths the insertion process.

[0121] The central structure design cleverly solves multiple technical problems. The circular baffle prevents the anchor from over-embedding into the tissue, facilitating subsequent removal. The innovative design of the rotatable center column allows the operator to flexibly adjust the pull cord angle, while the anti-slip texture on its outer surface increases friction during operation and improves adjustment precision. The design of the rope threading hole, perpendicular to the axis of the central straight rod structure, facilitates the insertion and adjustment of the rope, while its diameter is suitable for commonly used medical sutures, further enhancing operational convenience.

[0122] The design of the bottom structure focuses on the connection problem with the pushing device. The design that the diameter of the middle circular groove is smaller than that of the upper circular disc increases the stability of the overall structure. The design of multiple connection methods increases the reliability and flexibility of the connection between the anchor device and the pushing device.

[0123] The size design of the whole device is very compact. The overall length of 5 - 7 mm makes it suitable for endoscopic operation and can pass through the working channel of a conventional endoscope. At the same time, the sizes of all components have been carefully calculated to minimize the volume while ensuring the functions.

[0124] In addition, the pull cord used in conjunction with the cord - passing hole is made of absorbable material, which means that there is no need for a second - stage operation to remove it, greatly reducing the pain of patients and the medical cost.

[0125] Generally speaking, through its unique structural design and material selection, the anchor device effectively improves the efficiency and reliability of closing the wound gap in early - stage cancer stripping surgery under endoscopy. It not only considers the convenience of surgical operation but also fully pays attention to the safety and comfort of patients, reflecting the humanization and advancement of medical device design.

[0126] It should be noted that all the documents mentioned in this utility model are cited in this application for reference as if each document is individually cited for reference. In addition, it should be understood that after reading the above teachings of this utility model, those skilled in the art can make various changes or modifications to this utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0127] Moreover, in the claims and the specification of this patent, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Also, the term "comprising", "including" or any other variant thereof is intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one" does not exclude the existence of another identical element in the process, method, article or device including the said element. In the claims and the specification of this patent, if it is mentioned that an act is performed according to a certain element, it means at least performing the act according to that element, including two cases: performing the act only according to that element and performing the act according to that element and other elements.

[0128] Although the present utility model has been illustrated and described with reference to certain preferred embodiments thereof, those of ordinary skill in the art should understand that various changes may be made therein in form and detail without departing from the spirit and scope of the present utility model.

Claims

1. An anchor device for closing the wound gap in endoscopic early cancer resection surgery, characterized in that, Comprising: A spiral upper structure (3-1), which is spirally wound by a wire and has a pointed cone shape at the top; A middle straight rod structure, connected to the bottom end of the spiral upper structure (3-1); A circular retaining plate (3-2), arranged at the connection of the middle straight rod structure and the spiral upper structure (3-1); A rotatable middle cylinder (3-3), sleeved on the middle straight rod structure and capable of freely rotating around it, and the rotatable middle cylinder (3-3) has a rope-passing hole; A bottom structure, connected to the bottom end of the middle straight rod structure, including an upper circular plate and a lower cube (3-4), and a circular groove is formed in the middle of the lower cube (3-4); Wherein, the spiral upper structure (3-1) is used for screwing into the tissue, the rotatable middle cylinder (3-3) is used for adjusting the pulling rope angle, and the bottom structure is used for connecting with a pushing device.

2. The anchor device according to claim 1, wherein, The wire is a titanium wire.

3. The anchor device according to claim 1, characterized in that, The number of spiral turns of the spiral upper structure (3-1) is 3-5 turns, the pitch of each turn is 1-1.5 mm, and the outer diameter of the spiral is 2-2.6 mm.

4. The anchor device according to claim 1, characterized in that: The diameter of the circular retaining plate (3-2) is larger than the maximum diameter of the spiral upper structure (3-1).

5. The anchor device according to claim 1, wherein, The diameter of the middle straight rod structure is 0.5-0.7 mm, and the length is 3-5 mm.

6. The anchor device according to claim 1, characterized in that: The outer diameter of the circular retaining plate (3-2) is 1.6-2 mm, and the thickness is 0.1-0.3 mm.

7. The anchor device according to claim 1, characterized in that: The outer surface of the rotatable middle cylinder (3-3) is provided with anti-slip lines.

8. The anchor device according to claim 1, characterized in that The rotatable middle cylinder (3-3) is an unequal-sided structure, its thickness is 1.3-1.7 mm, the radius from the longest side to the center of the middle straight rod structure is 1-1.3 mm, and the radius from the shortest side to the center of the middle straight rod structure is 0.6-0.8 mm.

9. The anchor device according to claim 1, characterized in that, The direction of the rope-passing hole is perpendicular to the axis of the middle straight rod structure.

10. The anchor device according to claim 1, characterized in that, The diameter of the rope-passing hole on the rotatable middle cylinder (3-3) is 0.4-0.6 mm.

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