Needle and thread assembly based on cervical cerclage surgical suture

Abstract

The utility model relates to the field of surgical suture needles and threads, and discloses a needle and thread assembly based on cervical cerclage surgical suture, which comprises a suture line and a suture needle, the cross section of the suture line is circular, the suture line comprises a main line section, and two ends of the main line section are respectively connected with a transition section. The diameter of the transition section is gradually reduced along the extension direction; the large-diameter end of the transition section is connected with the main line section; the small-diameter end of the transition section is connected with the needle threading section; according to the scheme, the main line section serves as a main body of the suture line, the diameter of the main line section is relatively large, the section of the main line section is round, and the problem that due to the fact that the suture line is thin, tension is large, and cutting wounds of the thin line to cervical tissue are likely to happen can be solved, and particularly under the condition that suture and binding retention time is long, the thin line is likely to damage the tissue and cause infection; the needle threading section is used for being connected with a suture needle, the diameter of the needle threading section is relatively small, the needle threading section can more conveniently penetrate into a needle eye of the suture needle, and compared with a thick thread, the thin thread is easier to knot.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to the field of surgical suture needles and sutures, and particularly to a needle and suture assembly for cervical cerclage surgery sutures. Background Technology

[0002] Cervical insufficiency refers to a condition in which, during the mid-to-late stages of pregnancy, without clinical uterine contractions or other clear pathological signs and symptoms (such as bleeding, infection, or premature rupture of membranes), the cervix is ​​unable to withstand the increasing weight of the uterine contents due to congenital cervical malformations or acquired functional defects, leading to late miscarriage or premature birth. Cervical cerclage is one of the most effective treatments for cervical insufficiency and has been used clinically for over 60 years.

[0003] Cervical cerclage includes transvaginal and transabdominal cervical cerclage. Sutures are used during the procedure, and the commonly used suture is Ethicon MERSILENE suture manufactured by Johnson & Johnson. This suture consists of the suture material and a first and a second curved needle connected to both ends of the suture material. Both the first and second curved needles are 1 / 2-curve needles, 48 ​​mm long, with a circular cross-section. The suture material itself is 40 cm long and 5 mm wide. This suture has the following drawbacks: knotting is difficult, and slippage is possible. Furthermore, the suture is uniformly 5 mm wide, resulting in significant resistance when pulling and knotting, increasing the risk of tissue cutting. Cutting the suture makes it too wide, and threading it through the eye of a domestic needle is relatively difficult.

[0004] Based on the above, this utility model proposes a needle and thread assembly for suturing during cervical cerclage surgery. Utility Model Content

[0005] To address the problems mentioned in the background above, this utility model provides a needle and thread assembly for suturing during cervical cerclage surgery.

[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows.

[0007] A suture assembly for cervical cerclage surgery includes a suture and a suture needle. The suture has a circular cross-section and includes a main segment. Each end of the main segment is connected to a gradient segment. The diameter of the gradient segment decreases along the extension direction, and the end with the larger diameter of the gradient segment is connected to the main segment. The end with the smaller diameter of the gradient segment is connected to a needle insertion segment, which is used to connect to the suture needle.

[0008] As a further improvement and optimization of this utility model, the diameter of the main line segment is 5mm, the larger diameter end of the gradient segment is 5mm, the smaller diameter end of the gradient segment is 1mm, and the diameter of the needle-threading segment is 1mm.

[0009] As a further improvement and optimization of this utility model, the stitching thread is made of multi-strand polyester thread.

[0010] As a further improvement and optimization of this utility model, the suture needle includes a needle body, one end of which is set as a needle tip and the other end as a needle tail, and a needle eye is provided at the needle tail.

[0011] The outer surface of the needle tail has a threading notch that communicates with the needle eye. The threading notch is used to pull the suture into the needle eye and prevent the suture from leaving the needle eye.

[0012] As a further improvement and optimization of this utility model, the suture thread is a combination of multiple strands of cotton thread, interwoven and twisted.

[0013] The size of the thread notch on the outer surface of the needle tail is larger than the size of the thread notch on the needle eye wall, and the diameter of the needle-threading section of the suture is smaller than the size of the thread notch on the outer surface of the needle tail, while the diameter of the needle-threading section of the suture is larger than the size of the thread notch on the needle eye wall.

[0014] As a further improvement and optimization of this utility model, the two hole walls of the threading notch along the extension direction of the suture needle are inclined to opposite sides.

[0015] As a further improvement and optimization of this utility model, the two hole walls of the threading notch along the extension direction of the suture needle are inclined to the same side.

[0016] Compared with the prior art, the advantages of this utility model are as follows:

[0017] I. In this application: a) The main suture segment serves as the body of the suture and is used for surgical suturing of the patient. Its diameter is relatively large and its cross-section is circular, which can avoid the tension caused by a thin suture, which could easily lead to cutting trauma to the cervical tissue, especially when the suture is left in place for a long time, as thin sutures are very likely to damage the tissue and cause infection; b) The needle segment is used to connect with the suture needle. Its diameter is relatively thin, which makes it easier to pass through the eye of the suture needle, and compared with thicker thread, thinner thread is easier to knot.

[0018] 2. In this application, a threading notch is provided at the needle tail. During use, medical staff directly place the threading needle section horizontally at the threading notch. Since the two hole walls of the threading notch along the extension direction of the suture needle are arranged at an angle, the threading needle section is guided along the angled wall and enters the needle eye very smoothly and easily, thus easily completing the threading between the suture and the suture needle 4. During the threading process, the suture will undergo elastic deformation, but it will recover after entering the needle eye. Afterwards, since there is no angled wall to guide it, it is difficult for the suture to leave through the threading notch. Of course, if the suture is subjected to a large external force, it can be pulled out at the threading notch, but this situation does not occur during the operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of Embodiment 1 of the present utility model;

[0020] Figure 2 This is a schematic diagram of the suture needle of this utility model;

[0021] Figure 3 This is a schematic diagram of the threading notch of the suture needle of this utility model. Figure 1 ;

[0022] Figure 4 This is a schematic diagram of the threading notch of the suture needle of this utility model. Figure 1 .

[0023] The labels in the attached diagram are:

[0024] 1. Main line segment; 2. Gradient segment; 3. Needle threading segment; 4. Sewing needle; 401. Needle body; 402. Needle tip; 403. Needle tail; 404. Needle eye; 405. Threading notch. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] Example 1

[0027] Reference Figure 1 A suture assembly for cervical cerclage surgery sutures, comprising suture thread and suture needle 4, wherein:

[0028] The suture is made of multi-stranded braided thread with a circular cross-section. Non-absorbable polyester thread can be used. The suture length is 30-40cm. Since most laparoscopic cervical cerclage surgeries do not require sutures as long as 40cm, 35cm sutures are preferred, as they are easier for doctors to operate and save materials.

[0029] The suture includes a main segment 1, the diameter of which is preferably 5 mm. Each end of the main segment 1 is connected to a gradient segment 2, the diameter of which decreases along the extension direction. The end with the larger diameter of the gradient segment 2 is connected to the main segment 1, and the end with the smaller diameter of the gradient segment 2 is connected to a needle insertion segment 3. The end with the larger diameter of the gradient segment 2 is preferably 5 mm, and the end with the smaller diameter is preferably 1 mm. The diameter of the needle insertion segment 3 is preferably 1 mm, and it is used to connect with the suture needle 4. The advantages of this design are: a) The main segment 1, as the main body of the suture, is used for surgical suturing. Its relatively large diameter and circular cross-section avoid the tension caused by a thinner suture, which could easily lead to cutting trauma to the cervical tissue, especially when the suture is left in place for a long time, as thin sutures can easily damage tissue and cause infection; b) The needle insertion segment 3, used to connect with the suture needle 4, has a relatively thinner diameter, making it easier to insert into the eye of the suture needle 404, and it is easier to knot compared to a thicker suture.

[0030] Example 2

[0031] Reference Figure 2 The suture needle 4 includes a needle body 401, one end of which is set as a needle tip 402 and the other end as a needle tail 403, and a needle eye 404 is provided at the needle tail 403.

[0032] In one embodiment, although a thinner thread is easier to pass through the eye of the needle 404 than a thicker thread, medical staff still need to carefully examine the end of the needle segment 3 and the eye of the needle 404 to ensure that the end of the needle segment 3 can pass through the eye of the needle 404. That is, the threading method of the suture and the suture needle 4 has not changed, only that the needle segment 3 is thinner and easier to pass through the suture needle 4. In order to further improve the convenience of threading the suture and the suture needle 4, an embodiment two is proposed.

[0033] Reference Figure 3 and Figure 4 The outer surface of the needle tail 403 has a thread-passing notch 405 that communicates with the needle eye 404. The thread-passing notch 405 is used to pull the suture into the needle eye 404 and prevent the suture from leaving the needle eye 404. Specifically:

[0034] The suture is made of multiple strands of cotton thread, interwoven and twisted, and has elastic properties, so it can undergo elastic deformation when subjected to external pressure.

[0035] The size of the opening of the thread notch 405 on the outer surface of the needle tail 403 is larger than the size of the opening of the thread notch 405 on the wall of the needle eye 404. Furthermore, the diameter of the needle-feeding segment 3 of the suture is smaller than the size of the opening of the thread notch 405 on the outer surface of the needle tail 403, while the diameter of the needle-feeding segment 3 is larger than the size of the opening of the thread notch 405 on the wall of the needle eye 404. The advantage of this is that medical personnel can directly place the needle-feeding segment 3 horizontally at the thread notch 405, since the thread notch 405 extends along the direction of the suture needle 4. The two holes are arranged at an angle, so the needle section 3 is guided along the angled wall and enters the needle eye 404 very smoothly and easily. That is, the threading between the suture and the suture needle 4 is completed very easily. During the threading process, the suture will undergo elastic deformation, but it will recover after entering the needle eye 404. Afterwards, since there is no angled wall to guide it, it is difficult for the suture to leave through the threading gap 405. Of course, if the suture is subjected to a large external force, it can be pulled out at the threading gap 405, but this does not happen during the operation.

[0036] In addition, there are several cases where the two hole walls of the threading notch 405 are inclined along the extension direction of the suture needle 4. Two examples are given below:

[0037] I. Reference Figure 4 The two holes of the thread notch 405 along the extension direction of the suture needle 4 are inclined to opposite sides. The advantage of this is that the opening of the thread notch 405 on the outer surface of the needle tail 403 is larger, which is more conducive to aligning the suture with the thread notch 405.

[0038] II. Reference Figure 3 The two holes of the threading notch 405 along the extension direction of the suture needle 4 are inclined to the same side. The advantage of this is that after the suture enters the needle eye 404, it is more difficult for the suture to leave the needle eye 404 through the threading notch 405.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A needle-thread assembly based on the surgical suturing of a cerclage operation, comprising a suture thread and a suture needle (4), characterized in that, The cross-section of the suture is circular. The suture includes a main line segment (1). Each end of the main line segment (1) is connected to a gradient segment (2). The diameter of the gradient segment (2) decreases along the extension direction and the end with the larger diameter of the gradient segment (2) is connected to the main line segment (1). The end with the smaller diameter of the gradient segment (2) is connected to a needle-threading segment (3). The needle-threading segment (3) is used to connect with the suture needle (4).

2. A needle and thread assembly based on the cerclage operation for suturing the cervix according to claim 1, characterized in that, The diameter of the main line segment (1) is 5mm, the larger diameter end of the gradient segment (2) is 5mm, the smaller diameter end of the gradient segment 2 is 1mm, and the diameter of the needle-threading segment (3) is 1mm.

3. A needle and thread assembly for use in a cerclage procedure according to claim 1, wherein, The sutures are made of multi-strand polyester thread.

4. A needle and thread assembly based on the cerclage operation according to claim 1, characterized in that, The suture needle (4) includes a needle body (401), one end of which is set as a needle tip (402) and the other end as a needle tail (403), and a needle eye (404) is provided at the needle tail (403); The outer surface of the needle tail (403) is provided with a threading notch (405) that communicates with the needle eye (404). The threading notch (405) is used to pull the suture into the needle eye (404) and prevent the suture from leaving the needle eye (404).

5. A needle and thread assembly for use in a surgical cerclage procedure according to claim 4, wherein, The suture thread is made of multiple strands of cotton thread, interwoven and twisted together; The size of the opening of the thread notch (405) on the outer surface of the needle tail (403) is larger than the size of the opening of the thread notch (405) on the wall of the needle eye (404), and the diameter of the needle section (3) of the suture is smaller than the size of the opening of the thread notch (405) on the outer surface of the needle tail (403), and the diameter of the needle section (3) of the suture is larger than the size of the opening of the thread notch (405) on the wall of the needle eye (404).

6. A needle and thread assembly for use in a surgical cerclage procedure according to claim 5, wherein, The two holes of the threading notch (405) along the extension direction of the suture needle (4) are inclined to opposite sides.

7. A needle and thread assembly for use in a surgical cerclage procedure according to claim 5, wherein, The two holes of the threading notch (405) along the extension direction of the suture needle (4) are inclined to the same side.

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