A cervical cerclage sleeve

Abstract

The present invention provides a cervical cerclage sleeve, which comprises a plastic threaded tube and a shrinkage tube. At least two inner walls of the threaded tube are provided with a plurality of protruding parts along the circumferential direction, and the plurality of protruding parts are arranged in a spiral shape. The shrinkage tube is provided with through holes corresponding to the protruding parts. The shrinkage tube is arranged inside the threaded tube, and the protruding parts penetrate into the through holes to expand and fix the shrinkage tube. One end of the threaded tube is provided with a rotating operation part. The cervical cerclage sleeve provided by the present invention has a simple structure, low manufacturing cost, convenient operation during cerclage and removal, and is easy to perform surgery.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a cervical cerclage sleeve. Background Art

[0002] During pregnancy, the length of the cervix is more than 3 cm. In the late pregnancy, as the cervix matures, the cervix will gradually shorten and dilate, and finally become integrated with the uterus to form the birth canal for childbirth. However, in the second trimester of pregnancy, women may experience premature and excessive shortening and dilation of the cervix for various reasons, leading to miscarriage.

[0003] Cervical cerclage is the most commonly used surgical method in clinical practice for preventing mid-trimester pregnancy loss and preterm birth in patients with cervical incompetence. The patients targeted have characteristics such as relaxation of the internal os of the cervix, old cervical laceration, the vaginal segment of the cervix shorter than 0.5 cm, or a history of late miscarriage or preterm birth, or the patient is a twin or multiple pregnancy. Currently, with the popularization of non-invasive cervical cerclage, more and more cervical cerclage auxiliary tools are applied to cervical cerclage to achieve the effect of preventing the dilation of the uterine orifice.

[0004] For example, a cervical cerclage sleeve disclosed in the utility model patent CN 217525317 U includes a main body and a sleeve ring; one end of the main body is provided with a fixing part, and the other end of the main body is provided with a plurality of movable parts; the cross-sectional area of the movable part gradually increases in the direction away from the fixing part; the inner side of the sleeve ring is provided with an internal thread, and both the fixing part and the movable part are provided with external threads that cooperate with the internal thread; the fixing part is provided with a through hole, and the movable part is located on the side of the through hole. By setting the main body and the sleeve ring, when the sleeve ring moves close to the movable part, it can quickly tighten the end of the movable part around the cervix, effectively preventing the dilation of the uterine orifice, facilitating the user to take anti-abortion medications, and ensuring the efficiency of the cervical cerclage operation.

[0005] However, the existing cervical cerclage sleeves are relatively inconvenient to operate during cerclage and removal, and have a relatively high manufacturing cost. Summary of the Invention

[0006] In order to make up for the deficiencies in the prior art, the present invention provides a cervical cerclage sleeve, which has a simple structure, a low manufacturing cost, is convenient to operate during cerclage and removal, and is easy to implement the operation.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] A cervical cerclage sleeve includes a plastic threaded tube and a shrinkage tube. At least two sections of the inner wall of the threaded tube are provided with a plurality of protruding parts along the circumferential direction, and the plurality of protruding parts are arranged in a spiral pattern. The shrinkage tube is provided with through holes corresponding to the protruding parts. The shrinkage tube is arranged inside the threaded tube, and the protruding parts penetrate into the through holes to expand and fix the shrinkage tube. One end of the threaded tube is provided with a rotation operation part.

[0009] Further, the rotation operation part is a strip-shaped plate connected to the outer wall of the threaded tube.

[0010] Further, there are four protruding parts on the inner wall of each section of the threaded tube, and they are arranged in a cross shape.

[0011] Further, each section of the threaded tube is provided with the protruding part, and the positions of the protruding parts of adjacent two sections are staggered by 45°.

[0012] Further, the shrinkage tube is made of high-elasticity silica gel tube.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] The cervical cerclage sleeve of the present invention only includes two components, namely a plastic threaded tube and a shrinkage tube, with a simple structure and low manufacturing cost; before use, the shrinkage tube is fixed on the inner wall of the threaded tube through the protruding part. When in use, when the shrinkage tube reaches the cervix, by rotating the rotation operation part in the direction opposite to the vortex of the protruding part, the threaded tube can be separated from the through hole of the shrinkage tube, and the shrinkage tube will be tightened on the cervix under the action of elasticity, making the cervical cerclage operation fast and convenient; when it is necessary to remove the cervical cerclage sleeve, an angiostat can be used to turn the shrinkage tube outwards or a blunt-tipped scissors can be used to cut open the shrinkage tube, and the operation is also simple and convenient.

[0015] In addition, when a reinforced cerclage suture operation needs to be performed, the through hole on the shrinkage tube can be used as the entry and exit indication point for the surgical needle, making the operation easier to implement; the shrinkage tube can also relieve the compression and shear force of the suture on the cervical tissue and avoid cervical laceration. Description of the Drawings

[0016] Figure 1 is a structural diagram of a cervical cerclage sleeve of the present invention.

[0017] Figure 2 is a sectional view of a cervical cerclage sleeve of the present invention.

[0018] Wherein: 1. Threaded tube; 11. Protruding part; 12. Rotation operation part; 2. Shrinkage tube; 21. Through hole. Detailed Embodiment

[0019] Many specific details are set forth in the following description in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from this description, and those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0020] Such as Figure 1 、 2As shown in the figure, a cervical cerclage sleeve includes a plastic threaded tube 1 and a shrinkage tube 2. On the inner walls of at least two sections of the threaded tube 1, a plurality of protrusions 11 are provided along the circumferential direction, and the plurality of protrusions 11 are arranged in a spiral pattern. Through holes 21 corresponding to the protrusions 11 are provided on the shrinkage tube 2. The shrinkage tube 2 is arranged inside the threaded tube 1, and the protrusions 11 penetrate into the through holes 21 to expand and fix the shrinkage tube 2.

[0021] The number of protrusions 11 on the inner wall of each section of the threaded tube 1 is more than two. Preferably, there are four protrusions 11 on the inner wall of each section of the threaded tube 1 and they are arranged in a cross shape. The protrusions can be arranged on the threaded tube at intervals of one section, or protrusions can be arranged on each section, and the positions of the protrusions 11 on adjacent two sections are staggered by 45°, preferably the latter.

[0022] One end of the threaded tube 1 is provided with a rotation operation part 12. The rotation operation part 12 can be the end face of the threaded tube, or a concave part, or a convex part, preferably a strip-shaped plate protruding from the outer wall of the threaded tube 1, which is convenient for rotation operation. The shrinkage tube 2 is preferably a high-elasticity silica gel tube.

[0023] The usage method of the cervical cerclage sleeve of the present invention is as follows:

[0024] 1. First, use a vaginal speculum or a retractor to expose the cervix. Trim the cervical cerclage sleeve to an appropriate length along the concave part of the threaded tube according to the length of the cervix, and then put the cervical cerclage sleeve on the uterine cervical forceps (the rotation operation part 12 faces the cervix), clamp the cervix, and push the threaded tube 1 to the upper end of the cervix to reach the vaginal fornix.

[0025] 2. Rotate the rotation operation part 12 of the threaded tube 1 according to the Figure 2 arrow scheme, so that the threaded tube 1 is peeled off section by section from top to bottom. The protrusions 11 obliquely inserted into the shrinkage tube 2 on the inner wall of the threaded tube 1 are disengaged from the through holes 21, releasing the fixation on the shrinkage tube 2, and the shrinkage tube 2 elastically retracts and tightly sleeves the cervix to be close to the external orifice of the cervix. The high-elasticity silica gel tube sleeved on the cervix can maintain the closed state of the cervical canal and strengthen the supporting force on the internal orifice or upper segment of the cervix.

[0026] 3. If cervical cerclage reinforcement is required, after the shrinkage tube 2 is sleeved, the dilated cervix returns to its normal shape. The through holes 21 on it can be used as the needle entry and exit indication points, making the cerclage suture operation easier to implement; the shrinkage tube 2 also relieves the compression and shearing force of the suture on the cervical tissue and avoids cervical laceration.

[0027] 4. Before delivery, use a hemostatic forceps to clamp the upper end of the shrinkage tube 2 and turn it outwards or use a blunt scissors to cut open the shrinkage tube 2 to remove it, which is simple and convenient.

[0028] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cervical cerclage set, characterized in that: It includes a plastic threaded tube and a shrinkable tube. At least two sections of the inner wall of the threaded tube are provided with multiple protrusions along the circumferential direction. The multiple protrusions are arranged in a spiral shape. The shrinkable tube is provided with through holes corresponding to the protrusions. The shrinkable tube is arranged in the threaded tube, and the protrusions penetrate into the through holes to expand and fix the shrinkable tube. One end of the threaded tube is provided with a rotating operating part. The shrinkable tube adopts a high-elasticity silicone tube.

2. The cervical cerclage set according to claim 1, characterized in that: The rotating operation part is a strip plate connected to the outer wall of the threaded tube.

3. The cervical cerclage set according to claim 2, characterized in that: Each section of the threaded tube inner wall is provided with four protrusions, which are arranged in a cross shape.

4. The cervical cerclage set according to claim 3, characterized in that: Each section of the threaded pipe is provided with the protrusion, and the positions of the protrusions of two adjacent sections are staggered by 45 o .

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