Bent puncture needle combination with line for minimally invasive arteriovenous fistula ligation

Abstract

The utility model relates to the field of medical instruments, and aims to solve the problems of large surgical wound, relatively complicated surgical style and longer postoperative recovery time, which are not beneficial to patient compliance, medical experience and illness state improvement in clinical application at present. Therefore, simplification of the surgical process and reduction of extra injuries in the surgery are of great significance to patients and surgeons, and innovation and improvement of existing special medical instruments for minimally invasive arteriovenous fistula ligation are very necessary and urgent. According to the technical scheme, the bending puncture needle combination with the suture for the minimally invasive arteriovenous fistula ligation comprises a large bending puncture needle, a separable needle handle, an abdominal wall lateral opening flexible needle sleeve and a micro-bending pintle, a medical suture is arranged at one end of the large bending puncture needle, the separable needle handle is composed of the needle sleeve and the needle handle, and the needle sleeve is connected with the needle handle. The needle sleeve can be connected with the end, provided with the medical suture line, of the large-bending puncture needle in a sleeved mode, and the needle handle is of a butterfly-shaped structure.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a curved puncture needle combination with a thread for minimally invasive arteriovenous fistula ligation. Background Art

[0002] In clinical practice, arteriovenous fistulas often have vascular wall damage after a period of use, leading to the formation of pseudovascular aneurysms, and the diseased blood vessels need to be ligated and cut off to improve symptoms. However, open surgery is currently the main method in clinical practice, with large surgical incisions and relatively complex procedures, and a long recovery time after surgery. This is not conducive to patient compliance, medical experience, and improvement of the condition;

[0003] Therefore, simplifying the surgical process and reducing additional intraoperative damage are of great significance to both patients and surgeons. It is necessary and urgent to innovate and improve the current medical devices used for minimally invasive arteriovenous fistula ligation. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the above-mentioned technology and provide a curved puncture needle combination with a thread for minimally invasive arteriovenous fistula ligation.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is a curved puncture needle assembly with thread for minimally invasive arteriovenous fistula ligation, comprising a large curved puncture needle, a detachable needle handle, a flexible needle sleeve with a lateral opening on the abdominal wall, and a slightly curved needle plug, wherein one end of the large curved puncture needle is provided with a medical suture, the detachable needle handle is composed of a needle sleeve and a needle handle, and the needle sleeve can be sleeved with one end of the large curved puncture needle provided with the medical suture;

[0006] The flexible needle sleeve with a lateral opening on the abdominal wall comprises a body, an inlet end and an outlet end. The outlet end is a variable diameter structure, and its diameter gradually decreases from right to left.

[0007] As an improvement, the needle handle is configured as a butterfly-shaped structure.

[0008] The beneficial effects of the utility model are:

[0009] 1. Reduce surgical wounds and secondary injuries and simplify surgical procedures;

[0010] 2. Large curved puncture needles are used for deep puncture, and slightly curved needle plugs are used for superficial puncture, which meet the requirements of targeted physiological hook needles and reduce tissue damage;

[0011] 3. The flexible needle sleeve with lateral opening on the abdominal wall adopts an abdominal groove. During the operation, the needle and thread can be separated without completely removing the flexible needle sleeve with lateral opening on the abdominal wall, thus reducing secondary puncture injury.

[0012] 4. The needle tail of the large curved puncture needle is equipped with a thread, which reduces the threading steps and reduces the friction damage during surgical puncture, improves the intraoperative user experience and surgical efficiency, reduces focal tissue damage and promotes healing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of a large curved puncture needle;

[0014] Figure 2 is a schematic diagram of a detachable needle handle structure;

[0015] Figure 3 1. It is a schematic diagram of the structure of a flexible needle sleeve with a lateral opening on the abdominal wall;

[0016] Figure 4 It is a cross-sectional view of a flexible needle sleeve with a lateral opening on the abdominal wall;

[0017] Figure 5 is a schematic diagram of a micro-bent pintle structure;

[0018] Figure 6 It is a schematic diagram of the surgical site;

[0019] Figure 7 Is a combination of reference Figure 1 ;

[0020] Figure 8 Is a combination of reference Figure 2 .

[0021] As shown in the figure: 1. Large curved puncture needle, 101. Medical suture, 2. Detachable needle handle, 201. Needle sleeve, 202. Needle handle, 3. Flexible needle sleeve with lateral opening on abdominal wall, 301. Inlet end, 302. Outlet end, 4. Micro-curved needle plug, 5. Target blood vessel, 6. Needle entry point, 7. Needle exit point. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] In the description of the embodiments of the present utility model, it should be noted that if the terms "center", "upper", "lower", "right", "right", "vertical", "horizontal", "inside", "outside", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of the embodiments of the present invention, "multiple" means at least 2.

[0026] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] The following is a further detailed description of the utility model of a curved wire puncture needle combination for minimally invasive arteriovenous fistula ligation in conjunction with the accompanying drawings.

[0028] 1. Combined with Figure 1-Figure 5 A curved puncture needle assembly with thread for minimally invasive arteriovenous fistula ligation, comprising a large curved puncture needle 1, a detachable needle handle 2, a flexible needle sleeve 3 with a lateral opening on the abdominal wall, and a slightly curved needle plug 4, wherein one end of the large curved puncture needle 1 is provided with a medical suture 101, the detachable needle handle 2 is composed of a needle sleeve 201 and a needle handle 202, and the needle sleeve 201 can be sleeved with one end of the large curved puncture needle 1 provided with the medical suture 101;

[0029] The flexible needle sleeve 3 with a lateral opening on the abdominal wall comprises a body, an inlet end 301 and an outlet end 302. The outlet end 302 is a variable diameter structure, and its diameter gradually decreases from right to left.

[0030] In the specific implementation of the utility model, the inner diameter of the outlet end 302 is slightly larger than the diameter of the other end of the large curved puncture needle 1 .

[0031] In the specific implementation of the utility model, one end of the slightly curved needle plug 4 is a handle end, and the other end is a sharp end, and the diameter of the sharp end is slightly smaller than the inner diameter of the outlet end 302.

[0032] During the specific implementation of the present invention, the other end of the large curved puncture needle 1 can enter through the inlet end 301, and pass through the body of the flexible needle sleeve 3 with a lateral opening on the abdominal wall and the outlet end 302, and protrude from the outside of the flexible needle sleeve 3 with a lateral opening on the abdominal wall, and the two can form a movable connection structure; the needle sleeve 201 can be sleeved with one end of the large curved puncture needle 1 provided with a medical suture 101.

[0033] In the specific implementation of the utility model, the sharp end of the micro-bend needle plug 4 can enter through the inlet end 301, pass through the body of the flexible needle sleeve 3 with the lateral opening of the abdominal wall, and the outlet end 302, and protrude from the outside of the flexible needle sleeve 3 with the lateral opening of the abdominal wall, and the two can form a movable connection structure;

[0034] In the specific implementation of the present invention, the needle handle 202 is configured as a butterfly-shaped structure.

[0035] In the specific implementation of the present invention, the other end of the large curved puncture needle 1 can enter through the inlet end 301, and pass through the flexible needle sleeve 3 body with a lateral opening on the abdominal wall, the outlet end 302, and protrude from the outside of the flexible needle sleeve 3 with a lateral opening on the abdominal wall, and the two can form a movable connection structure; the needle sleeve 201 can be sleeved with one end of the large curved puncture needle 1 provided with a medical suture 101, and the three are combined into a first combination structure, such as Figure 7 As shown;

[0036] The sharp end of the micro-bend needle plug 4 can enter through the inlet end 301, pass through the abdominal wall side opening flexible needle sleeve 3 body, the outlet end 302, and protrude from the outside of the abdominal wall side opening flexible needle sleeve 3, and the two can form a movable connection structure, and the two are combined into a second combination structure, such as Figure 8 As shown;

[0037] First, insert the needle at the skin entrance positioning point above the target blood vessel 5. Since the inner diameter of the outlet end 302 is slightly larger than the diameter of the other end of the large curved puncture needle 1, the two can fit tightly together. Therefore, the large curved puncture needle 1 with a line can carry the flexible needle sleeve 3 with the lateral opening of the abdominal wall to bypass the target blood vessel 5 and exit the needle at the skin needle exit point 7. Then, remove the detachable needle handle 2, pull out the large curved puncture needle 1 from the outlet end 302, and leave the flexible needle sleeve 3 with the lateral opening of the abdominal wall in its original place. Since the diameter of the medical suture 101 is smaller than the inner diameter of the flexible needle sleeve 3 with the lateral opening of the abdominal wall, the medical suture 101 can easily detach from the flexible needle sleeve 3 with the lateral opening of the abdominal wall and wrap around the bottom of the blood vessel.

[0038] Then, the flexible needle sheath 3 with a lateral opening in the abdominal wall is retracted to below the skin at the needle entry point 6. The flexible needle sheath 3 with a lateral opening in the abdominal wall does not need to be separated from the skin. The sharp end of the slightly curved needle plug 4 can enter through the inlet end 301 and pass through the body of the flexible needle sheath 3 with a lateral opening in the abdominal wall and the outlet end 302, and protrude from the outside of the flexible needle sheath 3 with a lateral opening in the abdominal wall, thereby forming a second combination structure. Figure 8 As shown, the handle end of the micro-curved needle plug 4 is controlled to make the sharp end of the needle enter the target vessel above and below the skin to cross the target vessel, and then withdraw the needle from the needle exit point again, thereby driving the flexible needle sheath 3 with the lateral opening of the abdominal wall to cross the target vessel above and below the skin, and then the micro-curved needle plug 4 is pulled out from the inlet end 301, leaving the flexible needle sheath 3 with the lateral opening of the abdominal wall indwelling;

[0039] Then, the large curved puncture needle 1 with thread is reversely inserted into the flexible needle sheath 3 with the side opening of the abdominal wall, and the needle is removed from the entrance end 301. After the thread is passed, the flexible needle sheath 3 with the side opening of the abdominal wall is pulled out at the needle entry point on the skin. At this time, the medical suture thread 101 has been wrapped around the target blood vessel 5 under the skin, and both ends of the thread are removed from the needle entry point 6. The thread is pulled and knotted to complete the surgical operation.

[0040] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A curved puncture needle assembly with thread for minimally invasive arteriovenous fistula ligation, characterized in that: The invention comprises a large curved puncture needle (1), a detachable needle handle (2), a flexible needle sleeve (3) with an abdominal wall lateral opening, and a slightly curved needle plug (4); one end of the large curved puncture needle (1) is provided with a medical suture (101); the detachable needle handle (2) is composed of a needle sleeve (201) and a needle handle (202); the needle sleeve (201) can be sleeved with one end of the large curved puncture needle (1) provided with the medical suture (101); The abdominal wall side opening flexible needle sleeve (3) comprises a body, an inlet end (301), and an outlet end (302); the outlet end (302) is a variable diameter structure, and its diameter gradually decreases from right to left.

2. The curved puncture needle assembly with thread for minimally invasive arteriovenous fistula ligation according to claim 1, characterized in that: The needle handle (202) is configured as a butterfly-shaped structure.

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