Appendix root loop ligature device

Abstract

The utility model provides an appendix root loop ligature device which comprises a loop ligature tube, the loop ligature tube is of a hollow structure, and the front section of the loop ligature tube is a long and thin catheter. The loop ligature piece can axially move in the loop ligature tube and comprises a pushing guide wire and a loop ligature part which are connected, and the loop ligature part comprises an opening structure, a shaping ring and a loop ligature ring; the pushing guide wire is connected to the front end of the opening structure, the shaping ring is connected to the tail end of the opening structure, the loop ligature ring is arranged on the inner side of the shaping ring, and when the loop ligature part slides out of the catheter, the shaping ring and the loop ligature ring are expanded into a ring shape through the opening structure; the locking device is connected to one end of the loop ligature ring and can tighten the loop ligature ring. By arranging the loop ligature part with the opening structure and the shaping ring, the loop ligature part can be kept in a contraction state before entering the abdominal cavity and is easy to enter; in the abdominal cavity, the loop ligature ring can be kept in an open state, the size of the loop ligature ring is large, the shape of the loop ligature ring is kept stable, and the loop ligature ring can rapidly sleeve a to-be-ligated part; and tightening is achieved through the arranged locking device, operation is more convenient, and damage is not likely to be generated.

Description

Technical Field

[0001] This application relates to the field of medical devices, and in particular to an appendix root ligation device. Background Technology

[0002] Current appendectomy procedures are typically minimally invasive, usually performed endoscopically, using an appendix ligator to ligate the appendix before removal. However, the traditional appendix ligator's loop is free during insertion, increasing resistance and making it difficult to maintain its shape near the appendix, thus hindering proper positioning. Furthermore, after ligating the appendix tissue, the absorbable suture needs to be tightened to secure the ligation site, but it easily loosens again after being released, often requiring manual knotting by medical staff, which is inconvenient.

[0003] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this application. Utility Model Content

[0004] To solve all or part of the problems of the prior art, this utility model provides an appendix root ligator to achieve rapid application and tight ligation of the ligation site.

[0005] To achieve the above objectives, this utility model provides an appendix root ligation device, including...

[0006] The ligating tube is hollow, and its front section is a slender conduit.

[0007] The sling can move axially within the sling tube;

[0008] The ligating component includes a push guide wire and a ligating part connected together, and the ligating part includes an opening structure, a shaping ring and a ligating loop;

[0009] The push guide wire is connected to the front end of the opening structure, the shaping ring is connected to the end of the opening structure, and the ligation ring is disposed inside the shaping ring. When the ligation part slides out of the catheter, the opening structure opens to the surroundings, expanding the shaping ring and the ligation ring into a ring shape.

[0010] A locking device is connected to one end of the ligature ring and can tighten the ligature ring.

[0011] The technical solution of this application, by setting a ligation part with an opening structure and a shaping ring, can maintain a contracted state before entering the abdominal cavity, making it easy to enter; after entering the abdominal cavity, the ligation ring can be kept in an open state, ensuring that the opening size of the ligation ring is large enough and the shape remains stable, so that it can be quickly slipped on the site to be ligated; and the locking device is set to tighten it, making the operation more convenient and less likely to cause injury.

[0012] The inner side of the shaping ring has a groove, and the ligating ring is engaged in the groove. By fixing the ligating ring through the groove, the two can be effectively connected, and they can also be separated after ligating is completed.

[0013] The ligating ring and the groove are interference-fitted, and the interference fit is designed so that the ligating ring can be separated from the groove when a certain force is applied. This design facilitates the automatic separation of the ligating ring from the groove.

[0014] The ligation ring includes a free end and a self-locking structure. The self-locking structure includes a locking section and a fixing part. The fixing part has a through hole, through which the free end passes to form a collar-like structure. The locking section is located at the rear of the free end, and self-locking is achieved through the locking section and the fixing part. By setting a self-locking structure on the ligation ring, loosening after ligation can be prevented, eliminating the need for additional manual knot tying and simplifying the surgical procedure.

[0015] The locking section is provided with a first engaging tooth, and the through hole of the fixing part is provided with a corresponding second engaging tooth. Self-locking is achieved through the engagement of the first and second engaging teeth. This self-locking structure is simple and effective.

[0016] The locking section is larger than the through hole of the fixing part, and self-locking is achieved through the interference fit between the locking section and the through hole. This self-locking structure is simple and effective.

[0017] The locking device is a locking knob located on one side of the rear section of the ligation tube. The free end of the ligation ring is connected to the locking knob via a locking guide wire. The ligation ring is tightened by rotating the locking knob. Tightening is achieved by moving the free end of the ligation ring through the knob. Compared to the existing technology that tightens by manual pulling, this method is more convenient and precise, and while tightening quickly, it is less likely to damage the tissue.

[0018] It also includes a ring handle disposed outside the ligation tube, the front end of which is connected to the push guide wire. The ring handle controls the sliding of the ligation part within the catheter. The handle facilitates adjustment and control of the ligation part.

[0019] The retaining ring is made of a flexible material, facilitating the retraction and ejection of the ligation portion within the catheter.

[0020] The ligation ring is made of bioabsorbable material. It can be left directly in the body without further treatment.

[0021] Compared with the prior art, the main beneficial effects of this utility model are as follows: It provides an appendix root ligator with a ligation part having an opening structure and a fixing ring, which can remain in a contracted state before entering the abdominal cavity, making it easy to enter; after entering the abdominal cavity, it can keep the ligation ring in an open state, ensuring that the opening size of the ligation ring is large enough and the shape remains stable, so that it can be quickly slipped onto the site to be ligated; and the locking device can easily tighten the ligation ring, making the operation more convenient and less likely to cause injury; the ligation ring is equipped with a self-locking structure, which is not easy to loosen and does not require manual knotting. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the specific embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the ligation device of this utility model.

[0024] Figure 2 This is an enlarged view of the ligation part of this utility model.

[0025] Figure 3 This is a cross-sectional structural diagram of the ligating ring and the shaping ring of this utility model.

[0026] Figure 4 This is a schematic diagram of the ligation ring of this utility model. Detailed Implementation

[0027] The foregoing and other technical contents, features, and effects of this utility model will be clearly presented in the following detailed description of the preferred embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the scope of this utility model.

[0028] Example 1:

[0029] Please refer to this first. Figures 1 to 4This embodiment provides an appendix root ligation device, including: a ligation tube 1 and a ligation component 2; wherein, the ligation tube 1 is a hollow tubular structure, the ligation tube 1 includes two sections, the rear section 10 of the ligation tube is larger in size and can be used for gripping; the front section of the ligation tube 1 is smaller in size and presents a slender catheter 11 structure, the catheter 11 is made of flexible material and can be bent to facilitate entry into the human abdominal cavity for ligation operation. Figure 1 The diagram is for illustrative purposes only; the length and dimensions of the conduit 11 can be set according to actual conditions.

[0030] When not in use, the ligating member 2 is retracted inside the ligating tube 1. The ligating member 2 includes a push guide wire 20 and a ligating part 21 connected in sequence. A ring handle 5 is also provided outside the ligating tube 1. The ring handle 5 is connected to one end of the push guide wire 20 and the other end of the push guide wire 20 is connected to the ligating part 21. The ring handle 5 drives the ligating member 2 to move axially relative to the ligating tube 1 (i.e., slides inside the ligating tube 1), which can push the ligating part 21 out of the catheter 11 or retract it.

[0031] refer to Figures 1 to 4 The ligation section 21 includes an opening structure 30, a shaping ring 31, and a ligation ring 32; the push guide wire 20 is connected to the front end of the opening structure 30, the shaping ring 31 is connected to the end of the opening structure 30, and the ligation ring 32 is disposed inside the shaping ring 31. Specifically, the opening structure 30 is formed by multiple outwardly branching structures. The opening structure 30 has two states: in the open state when there is no external force (i.e., when the conduit 11 is extended), the ends of its branching structures form the largest size; in the contracted state when retracted into the conduit 11, the branching structures close together. That is, when the opening structure 30 is extended from the conduit 11, its ends open outwards to their maximum size; when the opening structure 30 is retracted into the conduit 11, under the action of the inner wall of the conduit 11, the opening structure 30 begins to close until it is fully or partially retracted into the conduit 11. The shaping ring 31 is connected to the end of the opening structure 30, and the connection point is usually located on the outside of the shaping ring 31; the ligation ring 32 is located on the inside of the shaping ring 31. Specifically, as shown... Figure 3As shown, a groove is provided on the inner side of the shaping ring 31, which can hold at least a portion of the ligation ring 32 in the groove. The ligation ring 32 and the groove are interference-fitted. The fit is designed so that when a certain force is applied, the ligation ring 32 can be pulled out of the groove, thereby separating the ligation ring 32 and the shaping ring 31. With the above structure, when the ligation part 21 is pushed out of the conduit 11, the opening structure 30 will open outwards, thereby expanding the shaping ring 31 at its end and the ligation ring 32 inside the shaping ring 31 into a ring structure. In this way, through the action of the opening structure 30 and the shaping ring 31, the ring structure formed by the ligation ring 32 can be ensured to have a sufficiently large size and the shape stability of the ring structure can be more easily ensured. Therefore, when ligating the root of the appendix, it is easier to put the ligation ring 32 in the accurate position.

[0032] refer to Figure 4 In this application, the ligating ring 32 has a ring-shaped structure, including a free end 320, a locking section 322, and a fixing part 321. The locking section 322 and the fixing part 321 form a self-locking structure. A through hole is provided in the fixing part 321, and a ring-shaped structure is formed by passing the free end 320 through the through hole. This embodiment also includes a locking device, which is a locking knob 40 located on one side of the rear section 10 of the ligating tube. The free end 320 of the ligating ring 32 is connected to the locking knob 40 through a locking guide wire 41. By rotating the locking knob 40, the free end 320 can be pulled backward to tighten the ligating ring 32 and stop at a suitable size. The ligating ring 32 is tightened by moving the free end 320 of the ligating ring 32 through the locking knob 40. Compared with the manual tightening operation in the prior art, this is more convenient and less likely to cause injury.

[0033] In this application, the ligating ring 32 also has a self-locking function, which is unidirectional and irreversible, and will not loosen. Specifically, self-locking is achieved by pulling the locking section 322 into the fixing part 321, utilizing the interaction between the two. In this first embodiment, the ligating ring 32 is a cable tie structure, with a first engaging tooth (not shown in the figure) on the locking section 322 of the cable tie, and a corresponding second engaging tooth in the through hole of the fixing part 321, achieving self-locking through their engagement. In this application, by using a ligating ring 32 with a self-locking structure, medical personnel are no longer required to perform knotting operations, thus avoiding the loosening problem common in the prior art.

[0034] In fact, the materials used for different components of the ligator in this application can be determined according to the purpose and characteristics of the structure. For example, the ligation ring 32 and the shaping ring 31 are usually made of flexible materials, which are easy to change shape and can be retracted into the catheter 11. They can also be formed into the desired shape under the action of the opening structure 30 when they are pushed out. Furthermore, since the ligation ring 32 will remain in the body, it is usually made of bioabsorbable materials (such as collagen materials). In order to realize the opening function of the opening structure 30, it can be made of shape memory material, so that it presents an outward forked shape without the action of external force, and its end has a large opening size.

[0035] The working principle of the above-mentioned ligation device is briefly described below: When using the ligation device, first, the catheter 11 at the front end of the ligation tube 1 is inserted into the appropriate position in the abdominal cavity. Then, the ring handle 5 is pushed forward, and the guide wire 20 drives the ligation part 21 to slide in the catheter 11 and gradually push the ligation part 21 out of the catheter 11. As the ligation part 21 is pushed out, the opening structure 30 opens in all directions, thereby expanding the shaping ring 31 and the ligation ring 32 into a ring structure. Then, the ring structure can be placed around the ligation point. The location to be ligated is determined; once the ligation position is confirmed, the locking knob 40 on the ligation tube is rotated, and the free end 320 of the ligation ring 32 is pulled backward by the locking guide wire 41, thereby causing the size of the ring structure formed by the ligation ring 32 to continuously decrease. During the locking process of the ligation ring 32, the ligation ring 32 will also gradually separate from the groove of the shaping ring 31 under the action of force; when we lock it to the appropriate size, we can cut it off at a certain distance above the fixing part 321 of the ligation ring 32. Due to the self-locking structure of the ligation ring 32, no additional knotting operation is required.

[0036] Example 2:

[0037] This embodiment 2 also provides an appendix root ligator, whose structure is basically the same as that in embodiment 1, the main difference being the structure of the ligation ring 32.

[0038] refer to Figure 4 In this application, the ligating ring 32 has a ring-shaped structure. The ligating ring 32 includes a free end 320, a locking section 322, and a fixing part 321. The locking section 322 and the fixing part 321 form a self-locking structure. A through hole is provided in the fixing part 321. After the free end 320 passes through the through hole, a ring-shaped structure is formed.

[0039] In this application, the ligation ring 32 also has a self-locking function, which is unidirectional and irreversible, and will not loosen. Specifically, self-locking is achieved by pulling the locking section 322 into the fixing part 321, utilizing the interaction between the two. In this second embodiment, the ligation ring 32 is a strip-shaped structure (or a cylinder), and the size of its locking section 322 is larger than the through hole size of the fixing part 321. Therefore, when the locking section 322 is pulled into the through hole, there is an interference fit between the locking section 322 and the through hole, and self-locking is achieved through the interaction force between the two. In this application, by using a ligation ring 32 with a self-locking structure, medical personnel no longer need to perform knotting operations, thus avoiding the loosening problem common in the prior art.

[0040] The common English terms or letters used in this invention for the purpose of clarity are for illustrative purposes only and are not intended to be limiting or specific. They should not be used to limit the scope of protection of this invention based on their possible Chinese translations or specific letters.

[0041] It should also be noted that in this article, 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.

Claims

1. An appendix root ligation device, characterized in that, include: The ligating tube is hollow, and its front section is a slender conduit. The sling can move axially within the sling tube; The ligating component includes a push guide wire and a ligating part connected together, and the ligating part includes an opening structure, a shaping ring and a ligating loop; The push guide wire is connected to the front end of the opening structure, the shaping ring is connected to the end of the opening structure, and the ligation ring is disposed inside the shaping ring. When the ligation part slides out of the catheter, the opening structure opens to the surroundings, expanding the shaping ring and the ligation ring into a ring shape. A locking device is connected to one end of the ligature ring and can tighten the ligature ring.

2. The appendix root ligation device according to claim 1, characterized in that, The inner side of the shaping ring is provided with a groove, and the sling ring is engaged in the groove.

3. The appendix root ligation device according to claim 2, characterized in that, The ligating ring and the groove are interference fit, and the interference fit is configured such that when a certain force is applied, the ligating ring can be separated from the groove.

4. The appendix root ligation device according to claim 1, characterized in that, The ligature ring includes a free end and a self-locking structure, the self-locking structure including a locking section and a fixing part; The fixing part is provided with a through hole, and the free end passes through the through hole to form a collar-shaped structure; The locking section is located at the rear of the free end, and self-locking is achieved through the locking section and the fixing part.

5. The appendix root ligation device according to claim 4, characterized in that, The locking section is provided with a first meshing tooth, and the through hole of the fixing part is provided with a corresponding second meshing tooth. Self-locking is achieved by meshing the first meshing tooth and the second meshing tooth.

6. The appendix root ligation device according to claim 4, characterized in that, The locking section is larger than the through hole of the fixing part, and self-locking is achieved through the interference fit between the locking section and the through hole.

7. The appendix root ligation device according to claim 4, characterized in that, The locking device is a locking knob located on one side of the rear section of the ligating tube. The free end of the ligating ring is connected to the locking knob via a locking guide wire. The ligating ring is tightened by rotating the locking knob.

8. The appendix root ligation device according to claim 1, characterized in that, It also includes a ring handle disposed outside the ligation tube, the ring handle being connected to the push guide wire, and the sliding of the ligation part in the catheter is controlled by the ring handle.

9. The appendix root ligation device according to claim 1, characterized in that, The shaping ring is made of a flexible material.

10. An appendix root ligation device according to claim 1, characterized in that, The ligation ring is made of a bioabsorbable material.

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