Cervical cerclage band with self-locking structure
By setting a self-locking structure on the cervical ligation suture, the elastic clamping of the locking part is used to achieve suture self-locking, which solves the problem of difficult knotting operation after suturing and realizes the convenience and reusability of the suturing process.
Patent Information
- Application Number
- CN202520965014.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-16
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-05-16
AI Technical Summary
Existing cervical ligation bands require multiple wrapping and knotting to lock them after suturing, which is difficult to operate and limited by the confined space environment of cervical ligation surgery.
Design a cervical ligation band with a self-locking structure. The suture has a self-locking structure, including a locking part and a barb part. After suturing, the self-locking is achieved by the elastic clamping of the locking part, avoiding knotting.
The sutures can self-lock after sewing, making operation more convenient and suitable for confined spaces. The sutures are also detachable and reusable, reducing costs.
Smart Images
Figure CN224671579U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cervical ligation technology, and in particular to a cervical ligation with a self-locking structure. Background Technology
[0002] Cervical cerclage is a surgical procedure used to prevent late-pregnancy miscarriage or premature birth. It typically involves suturing the cervix. Specifically, the main purpose of the procedure is to create a ring-like support around the cervix by suturing the external os (cervical opening) to help maintain the pregnancy. During the procedure, the doctor uses sutures to stitch the cervical tissue together, usually suturing the external os. This suturing is usually performed in the second trimester to prevent premature cervical dilation.
[0003] The cervical ligation band is used in this surgery as a suturing device. Since the cervical ligation procedure involves submucosal suturing in the vagina, epidural anesthesia is administered before the surgery to relax the pregnant woman and facilitate the operation. Unlike abdominal surgery, the operating space around the cervix is limited, requiring the lithotomy position. However, the existing cervical ligation band suture consists of a single suture and two semi-circular needles at the ends of the suture. After suturing, the two needles are used to repeatedly wrap and knot the suture to lock it in place. This locking method is limited by the operating space, making the operation quite difficult. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of existing cervical ligation bands, where the suture consists of a single suture and two semi-circular needles at the ends of the suture. After suturing, the suture needs to be wrapped and knotted multiple times with the two needles to lock it in place. This locking method is limited by the operating space and therefore difficult to operate. This invention provides a cervical ligation band with a self-locking structure. The suture of this cervical ligation band has a self-locking structure, which allows the two ends of the suture to lock themselves in place after suturing, eliminating the need for knotting. The whole process is more convenient and more suitable for the confined space environment of cervical ligation surgery.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] This utility model discloses a cervical ligation band with a self-locking structure, used in cervical ligation surgery to suture the external cervix. It includes sutures and round needles set at the ends of the sutures. The sutures are provided with a self-locking structure, which enables the two ends of the sutures to lock themselves after suturing, eliminating the need for knotting. The whole process is more convenient and more suitable for the confined space environment of cervical ligation surgery.
[0007] As a further description of the above technical solution: the round needle is disposed at one end of the suture, and the self-locking structure includes a locking part and a barb part. The locking part is disposed at the other end of the suture, the locking part is elastic, and a needle hole is provided in the locking part along the length direction. The barb part is located on the suture near the end of the round needle. This structural arrangement allows the cervical ligation band to be used by first sewing the suture to the outside of the cervix with the round needle. After sewing, the round needle is passed through the needle hole of the locking part, so that the barb part of the suture is inserted into the needle hole. Because the locking part is elastic, it can tightly clamp the barb part through its own elasticity to form a self-locking structure.
[0008] As a further description of the above technical solution: both ends of the suture are provided with round needles, the suture adopts a flat structure, and the self-locking structure includes a densification part provided on the suture. The densification part is close to one of the round needles and far away from the other round needle. The suture density of the densification part is greater than the suture density of other positions.
[0009] The encryption part has two through holes on its surface. The two through holes pass through the encryption part and are parallel to each other and of the same length.
[0010] As a further description of the above technical solution: a cutting seam is provided at one end of the seam where the encryption part is located. The cutting seam is located at the end of the encryption part near the round needle, which makes it convenient to cut the thread from the cutting seam after sewing is completed.
[0011] As a further description of the above technical solution: the round needle includes a needle body and a connecting end disposed at one end of the needle body. The connecting end is provided with a suture pressing cavity. One end of the suture is detachably pressed and fixed in the suture pressing cavity. Therefore, after the sewing is completed, the remaining suture can be pulled out from the suture pressing cavity, and then the round needle can be cleaned and disinfected for reuse, saving costs.
[0012] As a further description of the above technical solution: a pressure bar is inserted into the pressure cavity of the connecting end. The front end of the pressure bar has an opening. One end of the sewing thread is stuck in the opening. The end of the sewing thread partially covers the surface of the pressure bar. When the pressure bar is inserted into the pressure cavity, it can press the end of the sewing thread tightly, thereby connecting the sewing thread with the round needle. The operation is convenient and does not require additional fastening or fixing. Unstitching the sewing thread is also relatively convenient. You only need to pull the pressure bar out forcefully to remove it from the pressure cavity.
[0013] As a further description of the above technical solution: the outer wall of the pressure bar is provided with multiple annular grooves, and the inner wall of the stitching cavity is provided with multiple elastic protruding rings at corresponding positions to the annular grooves. When the pressure bar is inserted into the stitching cavity, the elastic protruding rings are engaged in the annular grooves. In this way, the pressure bar can be fixed in the stitching cavity by the engaging force between the elastic protruding rings and the annular grooves. When it is necessary to remove the stitch, it is only necessary to apply an outward pulling force to the pressure bar that is greater than the engaging force to pull out the pressure bar and then remove the stitch.
[0014] As a further description of the above technical solution: the cross-sections of the pressure bar and the pressure cavity are both frustum-shaped structures that fit each other, which makes it easy for the pressure bar to be inserted into the pressure cavity.
[0015] As a further description of the above technical solution: the end of the pressure bar has a hole, which is opened along the radial direction of the pressure bar and passes through the pressure bar. Therefore, when disassembling the pressure bar, if the pressure bar is too tight, a tool can be inserted into the hole and pulled out with the tool to facilitate the application of tension.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] The cervical ligation band has a self-locking structure on its sutures. After suturing, the two ends of the sutures can be locked in a self-controlled manner, eliminating the need for knotting. This makes the whole process more convenient and more suitable for the confined space environment of cervical ligation surgery.
[0018] The cervical ligation band uses a detachable connection between the round needle and the suture. After use, the remaining suture can be removed from the round needle, and then the round needle can be cleaned and disinfected for reuse. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;
[0020] Figure 2 This is a schematic diagram of the locking part structure in Embodiment 1 of this utility model;
[0021] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model;
[0022] Figure 4 This is a schematic diagram of a partial suture structure in Embodiment 2 of this utility model;
[0023] Figure 5 This is a schematic diagram of the connection structure between the round needle and the sewing thread in Embodiment 2 of this utility model.
[0024] Reference numerals: 1. Round needle; 100. Needle body; 101. Connecting end; 1010. Seam pressing cavity; 1011. Elastic convex ring; 102. Seam pressing rod; 1020. Hole; 1021. Annular buckle groove; 2. Sewing thread; 200. Cutting seam; 201. Enclosure; 202. Threading opening; 203. Barb; 3. Locking part; 300. Needle hole. Detailed Implementation
[0025] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This invention further illustrates the specific implementation of a cervical ligation band with a self-locking structure. It overcomes the shortcomings of existing cervical ligation bands, where the suture consists of a single suture and two semi-circular needles at the ends of the suture. After suturing, the suture needs to be repeatedly wrapped and knotted with the two needles to lock it in place. This locking method is limited by the operating space and therefore difficult to operate. This cervical ligation band has a self-locking structure on the suture. This self-locking structure allows the two ends of the suture to lock automatically after suturing, eliminating the need for further knotting. The entire process is more convenient and suitable for the confined space environment of cervical ligation surgery. This invention's cervical ligation band with a self-locking structure is not limited to the description in the following embodiments.
[0026] Example 1:
[0027] This embodiment provides a cervical ligation band with a self-locking structure, such as... Figures 1-5 As shown, the suture used in cervical cerclage surgery involves suturing the external cervix, including a suture 2 and a round needle 1 at the end of the suture 2. The suture 2 has a self-locking structure, which allows the two ends of the suture 2 to lock themselves after suturing, eliminating the need for knotting. This makes the whole process more convenient and more suitable for the confined space environment of cervical cerclage surgery.
[0028] Specifically, such as Figures 1-2As shown, a round needle 1 is positioned at one end of the suture 2. The self-locking structure includes a locking part 3 and a barb part 203. The locking part 3 is positioned at the other end of the suture 2 and is elastic. The locking part 3 has a needle hole 300 along its length. The barb part 203 is located on the suture 2 near the end of the round needle 1. This structure allows the cervical ligation band to be used by first sewing the suture 2 to the outside of the cervix using the round needle 1. After sewing, the round needle 1 is passed through the needle hole 300 of the locking part 3, allowing the suture to... The barb 203 on the pin 2 is inserted into the needle hole 300. Since the locking part 3 is elastic, it can tightly clamp the barb 203 through its own elasticity to form a self-locking structure. Therefore, it should be noted that the barb 203 is made of absorbable materials such as polydioxanone, and the locking part 3 is made of polylactic acid copolymer, such as polylactic acid-polyvinyl alcohol, which can be absorbed by the human body. Compared with polylactic acid, polylactic acid copolymer has higher flexibility and elasticity, so that the barb 203 can be pressed tightly after being inserted into the locking part 3.
[0029] Example 2
[0030] Based on Example 1, such as Figures 3-5 As shown, both ends of the suture 2 are provided with round needles 1. The suture 2 adopts a flat structure. The self-locking structure includes a densification part 201 provided on the suture 2. The densification part 201 is close to one of the round needles 1 and far away from the other round needle 1. The suture 2 density of the densification part 201 is greater than the suture 2 density at other positions.
[0031] The encryption part 201 has two wire holes 202 on its surface. The two wire holes 202 pass through the encryption part 201 and are parallel to each other and of the same length.
[0032] Specifically, such as Figure 4 As shown, in order to facilitate the cutting of the thread 2 after sewing, in this embodiment, a cutting seam 200 is provided at one end of the thread 2 located in the encryption part 201. The cutting seam 200 is located at the end of the encryption part 201 near the round needle 1, so that the thread can be cut from the cutting seam 200 after sewing.
[0033] By adopting the above technical solution:
[0034] When using this cervical ligation band, the suture 2 is first sewn onto the outside of the cervix using a round needle 1. It is important to note that the reinforcement section 201 should be positioned outside the initial suture opening. After suturing, the round needle 1, away from the reinforcement section 201, is inserted through one suture hole 202 and exited through the other. It then loops around the suture 2 at the insertion point, forming a fastening structure between the two suture holes 202 to secure the suture 2. This fastening structure is more convenient than the existing method of directly knotting the suture 2 and is more suitable for the confined space of cervical ligation surgery. The reinforcement section 201 significantly improves the strength of the fastening point of the suture 2, preventing tearing at the fastening point.
[0035] Example 3
[0036] Based on Example 2, such as Figure 3 , Figure 5 As shown, in order to enable the circular needle 1 to be reused, in this embodiment, the circular needle 1 includes a needle body 100 and a connecting end 101 disposed at one end of the needle body 100. The connecting end 101 is provided with a thread pressing cavity 1010. One end of the suture 2 is detachably pressed and fixed in the thread pressing cavity 1010. Therefore, after the sewing is completed, the remaining suture 2 can be pulled out from the thread pressing cavity 1010, and then the circular needle 1 can be cleaned and disinfected for reuse, thus saving costs.
[0037] Specifically, such as Figure 3 , Figure 5 As shown, in order to facilitate the disassembly of the suture 2, in this embodiment, a pressure bar 102 is inserted into the pressure cavity 1010 inside the connecting end 101. The front end of the pressure bar 102 is provided with an opening, and one end of the suture 2 is stuck in the opening. The end of the suture 2 partially covers the surface of the pressure bar 102, so that when the pressure bar 102 is inserted into the pressure cavity 1010, the end of the suture 2 can be pressed tightly, thereby realizing the connection between the suture 2 and the round needle 1. The operation is convenient and does not require additional fastening and fixing actions. Unfastening the suture 2 is also relatively convenient. It is only necessary to pull out the pressure bar 102 with force to remove it from the pressure cavity 1010.
[0038] Specifically, such as Figure 3 , Figure 5As shown, in order to ensure the connection strength between the suture 2 and the round needle 1, in this embodiment, the outer wall of the pressure bar 102 is provided with a plurality of annular grooves 1021, and the inner wall of the pressure cavity 1010 is provided with a plurality of elastic protruding rings 1011 at corresponding positions to the annular grooves 1021. When the pressure bar 102 is inserted into the pressure cavity 1010, the elastic protruding rings 1011 are engaged in the annular grooves 1021. In this way, the pressure bar 102 can be fixed in the pressure cavity 1010 by the engaging force between the elastic protruding rings 1011 and the annular grooves 1021. When it is necessary to disassemble the suture 2, it is only necessary to apply an outward pulling force to the pressure bar 102 that is greater than the engaging force to pull out the pressure bar 102, and then remove the suture 2.
[0039] Specifically, such as Figure 3 , Figure 5 As shown, in order to facilitate the installation of the pressure rod 102, in this embodiment, the cross-sections of the pressure rod 102 and the pressure cavity 1010 are both frustum-shaped structures that fit each other, so that the pressure rod 102 can be easily inserted into the pressure cavity 1010.
[0040] Specifically, such as Figure 5 As shown, in order to pull out the pressure bar 102, in this embodiment, a hole 1020 is provided at the end of the pressure bar 102. The hole 1020 is opened along the radial direction of the pressure bar 102 and passes through the pressure bar 102. Therefore, when disassembling the pressure bar 102, if the pressure bar 102 is too tight, a tool can be inserted into the hole 1020 and pulled out with the tool to facilitate the application of pulling force.
[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A cervical cerclage band with a self-locking structure, used in cervical cerclage surgery for suturing the external cervix, characterized in that: It includes a suture (2) and a round needle (1) set at the end of the suture (2). The suture (2) is provided with a self-locking structure, which enables the two ends of the suture (2) to be self-locked after the suturing is completed.
2. The cervical ligation band with a self-locking structure according to claim 1, characterized in that: The round needle (1) is disposed at one end of the suture (2). The self-locking structure includes a locking part (3) and a barb part (203). The locking part (3) is disposed at the other end of the suture (2). The locking part (3) is elastic and has a needle hole (300) along the length direction inside the locking part (3). The barb part (203) is located on the suture (2) near the end of the round needle (1).
3. A cervical ligation band with a self-locking structure according to claim 1, characterized in that: Both ends of the suture (2) are provided with round needles (1). The suture (2) adopts a flat structure. The self-locking structure includes a densification part (201) provided on the suture (2). The densification part (201) is close to one of the round needles (1) and far away from the other round needle (1). The suture (2) density of the densification part (201) is greater than the suture (2) density of other positions. The encryption part (201) has two threading holes (202) on its surface. The two threading holes (202) pass through the encryption part (201) and are parallel to each other and have the same length.
4. A cervical ligation band with a self-locking structure according to claim 3, characterized in that: A cutting seam (200) is provided on the sewing thread (2) at one end of the encryption part (201), and the cutting seam (200) is located at one end of the encryption part (201) near the round needle (1).
5. A cervical ligation band with a self-locking structure according to claim 3, characterized in that: The round needle (1) includes a needle body (100) and a connecting end (101) disposed at one end of the needle body (100). The connecting end (101) is provided with a pressing cavity (1010). One end of the suture (2) is detachably pressed and fixed in the pressing cavity (1010).
6. A cervical ligation band with a self-locking structure according to claim 5, characterized in that: A pressure bar (102) is inserted into the pressure cavity (1010) inside the connecting end (101). The front end of the pressure bar (102) is provided with an opening. One end of the sewing thread (2) is stuck in the opening. The end of the sewing thread (2) partially covers the surface of the pressure bar (102), so that when the pressure bar (102) is inserted into the pressure cavity (1010), the end of the sewing thread (2) can be pressed tightly.
7. A cervical ligation band with a self-locking structure according to claim 6, characterized in that: The outer wall of the pressure bar (102) is provided with a plurality of annular grooves (1021), and the inner wall of the wire pressing cavity (1010) is provided with a plurality of elastic protruding rings (1011) at corresponding positions to the annular grooves (1021). When the pressure bar (102) is inserted into the wire pressing cavity (1010), the elastic protruding rings (1011) are engaged in the annular grooves (1021).
8. A cervical ligation band with a self-locking structure according to claim 7, characterized in that: The cross-sections of the pressure bar (102) and the pressure cavity (1010) are both frustum-shaped structures that fit each other.
9. A cervical ligation band with a self-locking structure according to claim 8, characterized in that: The end of the pressure bar (102) is provided with a hole (1020), which is opened radially along the pressure bar (102) and passes through the pressure bar (102).