Cervical cerclage support for cervical insufficiency

Abstract

The utility model relates to the technical field of cervical cerclage, in particular to a cervical cerclage support for cervical insufficiency, which comprises a protective ring, a push rod, first connecting blocks, a fixing rod, a silica gel pad and a second connecting block, the push rod is slidably connected in the protective ring, the first connecting blocks are connected at the upper end of the push rod at equal intervals, and the fixing rod is connected with the silica gel pad. Fixing rods are rotationally connected to the first connecting blocks, silica gel pads are jointly connected between the fixing rods, and second connecting blocks are rotationally connected to the fixing rods. The fixing rod and the silica gel pad are installed, due to the fact that the amniotic sac is protected by the silica gel pad, the silica gel pad can effectively isolate direct contact between a suturing instrument and the amniotic sac, the softness and the elasticity of the silica gel pad can adapt to the shape of the amniotic sac, comprehensive protection is provided, and through protection of the silica gel pad, the suturing instrument can be prevented from being damaged. A doctor can perform suture operation more trustingly, the safety and success rate of an operation are effectively improved, and the operation risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of cervical cerclage technology, and more specifically, to a cervical cerclage stent for cervical insufficiency. Background Technology

[0002] Cervical insufficiency, also known as incomplete closure of the internal cervical os or cervical insufficiency, refers to a condition in which, due to congenital or acquired anatomical and functional defects of the cervix, the patient experiences painless cervical dilation in the second trimester without uterine contractions, followed by delivery of the fetus and placenta, and termination of pregnancy. It usually occurs before 24 weeks of gestation and is not accompanied by other factors that clearly lead to uterine contractions and premature birth (such as bleeding, infection, and premature rupture of membranes).

[0003] Currently, cervical cerclage is the only surgical and effective treatment for cervical insufficiency. Its purpose is to strengthen the tension of the cervical canal as much as possible through suturing techniques, preventing the lower uterine segment from extending into the isthmus and the cervical os from dilating, thus assisting the internal cervical os in bearing the weight of the fetus and its appendages in late pregnancy. Simultaneously, postoperative tocolytic therapy can reduce the tension of uterine muscle fibers and the load on the lower uterine segment, or reduce the chance of separation between the lower uterine segment and the placenta, prolonging gestation, maintaining pregnancy, and preventing recurrent miscarriage and premature birth.

[0004] During current emergency cervical cerclage procedures, the amniotic sac may be visible or protrude into the vagina during cervical dilation. In such cases, the amniotic sac must first be repositioned to expose the cervical margin at that location, followed by precise suturing of this area. Given the soft and thin nature of cervical tissue, excessively deep punctures during the procedure can easily lead to mucosal penetration, potentially damaging the amniotic sac and causing premature rupture of membranes. However, current medical tools lack a dedicated product designed to protect the amniotic sac, presenting several challenges: 1. Increased surgical complexity: The lack of effective protective devices means surgeons must be extremely cautious during suturing to prevent accidental penetration of cervical tissue. This demanding procedure not only increases the difficulty and duration of the surgery but also presents significant technical challenges for even experienced surgeons, posing a risk of accidental damage to the amniotic sac and further increasing the uncertainty of the procedure. 2. Patients face higher surgical risks: Once the amniotic sac is damaged, it will directly lead to premature rupture of membranes, which is an extremely serious complication of emergency cervical cerclage. Premature rupture of membranes not only increases the possibility of intrauterine infection, but may also trigger premature birth, and in extreme cases may threaten the life of the fetus.

[0005] Therefore, it is necessary to design a cervical ligation stent for cervical insufficiency. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, the present invention provides a cervical ligation stent for cervical insufficiency.

[0007] The technical solution of this utility model is as follows: a cervical cerclage support for cervical insufficiency, comprising a protective ring, a push rod, a first connecting block, a fixing rod, a silicone pad, a second connecting block, a third connecting block, and sliders. The push rod is slidably connected inside the protective ring. The upper end of the push rod is equidistantly connected to the first connecting block. Each first connecting block is rotatably connected to a fixing rod. A silicone pad is connected between the fixing rods. Each fixing rod is rotatably connected to a second connecting block. The inner wall of the protective ring is equidistantly connected to sliders in the same number as the first connecting blocks. Each slider is rotatably connected to a third connecting block.

[0008] In one embodiment, the outer edge of the silicone pad is arc-shaped.

[0009] In one embodiment, a spiral spring is also included, with the first connecting block connected to the fixing rod.

[0010] In one embodiment, a fixing component is also included. The push rod is provided with a fixing component, which includes a retaining bead and a connecting spring. Three equally spaced vertically arranged retaining slots are symmetrically opened on the inner walls of the upper and lower parts of the protective ring. The retaining bead can fit into the retaining slot. A connecting spring is connected between the retaining bead and the push rod.

[0011] In one embodiment, a rubber sleeve is also included, with the lower part of the push rod fitted with a rubber sleeve.

[0012] In one embodiment, the fixing components are provided in three parts.

[0013] The beneficial effects of this utility model are:

[0014] This invention, through the installation of a fixing rod and a silicone pad, effectively isolates the amniotic sac from direct contact between the suturing instruments and the amniotic sac. The softness and elasticity of the silicone pad can adapt to the shape of the amniotic sac, providing comprehensive protection. With the protection of the silicone pad, doctors can perform suturing operations with greater confidence, effectively improving the safety and success rate of the surgery and reducing surgical risks. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a cross-sectional view of the protective ring of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the fixing rod, silicone pad, and second connecting block of this utility model.

[0018] Figure 4 This is an enlarged view of part A of this utility model.

[0019] Figure 5 This is a diagram illustrating the present utility model.

[0020] The markings in the diagram are: 1-protective ring, 2-push rod, 4-first connecting block, 5-fixing rod, 6-silicone pad, 7-second connecting block, 8-third connecting block, 9-slider, 10-volume spring, 101-slot, 11-ball, 12-connecting spring, 13-rubber sleeve. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Example: A cervical cerclage stent for cervical insufficiency, such as Figures 1-3 and Figure 5 As shown, the device includes a protective ring 1, a push rod 2, a first connecting block 4, a fixing rod 5, a silicone pad 6, a second connecting block 7, a third connecting block 8, and a slider 9. The push rod 2 is slidably connected to the inside of the protective ring 1. Four first connecting blocks 4 are equidistantly connected to the upper end of the push rod 2. A fixing rod 5 is rotatably connected to each first connecting block 4. Silicone pads 6 are keyed together between the fixing rods 5. The outer edge of the silicone pad 6 is arc-shaped. Second connecting blocks 7 are rotatably connected to each fixing rod 5. The inner wall of the protective ring 1 has sliders 9 of the same number as the first connecting blocks 4, slidably connected at equal intervals. The second connecting blocks 7 are rotatably connected to the third connecting blocks 8. Pushing the push rod 2 causes the three fixed components to move upward together. At this time, the second connecting blocks 7 and the third connecting blocks 8 will move upward together with the slider 9. When the slider 9 moves to its limit and can no longer move upward, the slider 9 will limit the second connecting blocks 7 and the third connecting blocks 8, so that the second connecting blocks 7 and the third connecting blocks 8 can no longer move upward. At this time, the fixing rod 5 and the silicone pad 6 extend out of the top of the protective ring 1. As the push rod 2 continues to move upward, the fixing rod 5 will rotate outward at the same time, thereby gradually extending the silicone pad 6.

[0023] like Figure 3 As shown, it also includes a spiral spring 10. A spiral spring 10 is connected between the first connecting block 4 and the fixing rod 5. This causes the locking beads 11 to disengage from the locking groove 101 on the upper part of the protective ring 1. The spiral spring 10 will rotate and reset the fixing rod 5, thereby retracting and resetting the silicone pad 6.

[0024] like Figure 4As shown, it also includes fixing components. The push rod 2 is equipped with three fixing components, including locking beads 11 and connecting springs 12. The inner walls of the upper and lower parts of the protective ring 1 are symmetrically arranged with three equally spaced vertical slots 101. The positions of the three slots 101 on the upper part of the protective ring 1 represent the unfolded area of ​​the silicone pad 6, which are 1 cm, 2 cm and 3 cm from bottom to top, respectively. This allows the doctor to accurately adjust the unfolded area of ​​the silicone pad 6 according to the specific condition of the patient's cervix. The push rod 2 is slidably connected with three locking beads 11. Each locking bead 11 can fit into the slot 101. The locking beads 11 and the push rod 2 are connected by connecting springs 12 through spring seats.

[0025] like Figure 1 and Figure 2 As shown, it also includes a rubber sleeve 13, and the lower part of the push rod 2 is fitted with a rubber sleeve 13.

[0026] When using this device, it should first be sterilized. Before dilating the patient's cervix, the patient should be positioned with their head lower than their hips. The doctor then uses the dilator to open the cervix to more than 4 cm. The doctor holds the protective ring 1, and the rubber sleeve 13 on the push rod 2 effectively increases friction, making it easier for the doctor to push the push rod 2. Pushing the push rod 2 upwards causes the three fixing components to move upwards together. At this time, the second connecting block 7 and the third connecting block 8 will move upwards along with the slider 9. During this process, the retaining bead 11 disengages from the retaining groove 101 at the bottom of the protective ring 1. When the slider 9 moves upwards to its limit and can no longer move upwards, the slider 9 will limit the second connecting block 7 and the third connecting block 8, causing the second connecting block 7 to move upwards. The third connecting block 8 also cannot move upwards. At this point, the fixing rod 5 and the silicone pad 6 extend from the top of the protective ring 1. As the push rod 2 continues to move upwards, the fixing rod 5 will rotate outwards simultaneously, and the spiral spring 10 will be wound up, thereby gradually extending the silicone pad 6. When the silicone pad 6 is extended to approximately the same area as the amniotic sac, the silicone pad 6 is placed against the amniotic sac, and then the push rod 2 is slowly pushed to allow the silicone pad 6 to continue to slowly unfold against the amniotic sac. The outer edge of the silicone pad 6 is arc-shaped, allowing the outer edge of the silicone pad 6 to gently contact the amniotic sac and the inner wall of the cervix. The area to be unfolded for the silicone pad 6 is selected according to the specific condition of the patient's cervix. The locking bead 11 on the push rod 2 corresponds to the size of the silicone pad 6 to be unfolded. After groove 101 is engaged, it indicates that the unfolded area of ​​silicone pad 6 is fixed. Then, simultaneously push protective ring 1 and push rod 2 to gently push silicone pad 6 upwards, repositioning the amniotic sac and exposing the cervical edge at that location. The doctor then uses ovum forceps or atraumatic forceps to grasp the cervix at this point, gently pulls it, and performs suturing. The suture needle is kept as close as possible to the internal cervical os, with a stitch spacing of 1-1.5 cm. Because the amniotic sac is protected by silicone pad 6, it effectively isolates the suture instruments from direct contact with the amniotic sac. The softness and elasticity of silicone pad 6 can adapt to the shape of the amniotic sac, providing comprehensive protection. With the protection of silicone pad 6, the doctor can perform suturing operations with greater confidence, effectively improving the safety and success rate of the surgery. This reduces surgical risks. Repeat the above steps, exposing and suturing the next portion of the cervix, suturing several stitches around the cervix, gently pulling the sutures to insert the amniotic sac into the internal cervical os, gradually tightening the sutures and tying a knot. Then pull down the push rod 2, causing the beads 11 to disengage from the slots 101 on the upper part of the protective ring 1. The spiral spring 10 will rotate and reset the fixing rod 5, thereby retracting and resetting the silicone pad 6. During this process, the push rod 2 will be moved downwards. Once the spiral spring 10 has reset, remove the device from the patient's body, thus completing the emergency cervical cerclage procedure. Then manually move the push rod 2 downwards again, ensuring the beads 11 engage with the slots 101 on the lower part of the protective ring 1. The device will then be cleaned and disinfected in preparation for future use.

[0027] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of this invention. Therefore, the scope of this invention should be limited only by the appended claims.

Claims

1. A cervical cerclage stent for cervical insufficiency, characterized in that, include: Protective ring (1); The push rod (2) is slidably connected inside the protective ring (1); The first connecting block (4) is equidistantly connected to the upper end of the push rod (2); The fixed rods (5) are rotatably connected to the first connecting block (4); Silicone pads (6) are connected together between the fixing rods (5); The second connecting block (7) is rotatably connected to the fixed rod (5); The number of sliders (9) is the same as that of the first connecting block (4), and they are equidistantly slidably connected to the inner wall of the protective ring (1); The third connecting block (8) is rotatably connected between the slider (9) and the second connecting block (7).

2. The cervical cerclage stent for cervical insufficiency as described in claim 1, characterized in that, The outer edge of the silicone pad (6) is arc-shaped.

3. A cervical cerclage stent for cervical insufficiency as described in claim 2, characterized in that it further... include: A spiral spring (10) is connected between the first connecting block (4) and the fixing rod (5).

4. A cervical cerclage stent for cervical insufficiency as described in claim 3, characterized in that it further... include: A fixing component for fixing the push rod (2) is disposed on the push rod (2), the fixing component comprising: Three locking beads (11) are slidably connected to the push rod (2). Three equally spaced vertically arranged slots (101) are symmetrically opened on the inner walls of the upper and lower parts of the protective ring (1), and the locking beads (11) can fit into the slots (101). A connecting spring (12) is connected between the retaining bead (11) and the push rod (2).

5. A cervical cerclage stent for cervical insufficiency as described in claim 4, characterized in that it further... include: A rubber sleeve (13) is fitted onto the lower part of the push rod (2).

6. A cervical cerclage stent for cervical insufficiency as described in claim 5, characterized in that, The fixing components are provided in three parts.

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