Cervical cerclage sleeve

Abstract

The invention provides a cervical cerclage sleeve which comprises a plastic threaded pipe and a contraction pipe, a plurality of protruding parts are arranged on at least two sections of inner walls of the threaded pipe in the circumferential direction, the protruding parts are distributed in a vortex shape, through holes corresponding to the protruding parts are formed in the contraction pipe, the contraction pipe is arranged in the threaded pipe, and a plurality of through holes are formed in the contraction pipe. The protruding part penetrates into the through hole to expand and fix the contraction pipe, and a rotary operation part is arranged at one end of the threaded pipe. The cervical cerclage sleeve provided by the invention is simple in structure, low in manufacturing cost, convenient to operate during cerclage and removal, and easy to implement an operation.

Description

Technical Field

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

[0002] The length of the cervix during pregnancy is more than 3 cm. In the late pregnancy, as the cervix matures, it will gradually shorten and expand, and finally become one with the uterus, forming a birth canal to facilitate delivery. However, in the second trimester of pregnancy, women may suffer miscarriage due to various reasons, which may cause the cervix to shorten and expand too early and too quickly.

[0003] Cervical cerclage is the most commonly used surgical method for preventing mid-term pregnancy loss and premature birth in patients with cervical insufficiency. It is targeted at patients with cervical os relaxation, old cervical lacerations, vaginal cervical segments shorter than 0.5 cm, or a history of late miscarriage or premature birth, or patients with twin or multiple pregnancies. At present, with the popularity of non-invasive cervical cerclage, more and more cervical cerclage auxiliary tools are used in cervical ligation to achieve the effect of preventing cervical dilation.

[0004] For example, the utility model patent CN 217525317 U discloses a cervical cerclage sleeve, which includes a main body and a ring; a fixed part is provided at one end of the main body, and a plurality of movable parts are provided at the other end of the main body; the cross-sectional area of ​​the movable part gradually increases in the direction away from the fixed part; an internal thread is provided on the inner side of the ring, and both the fixed part and the movable part are provided with external threads matching the internal thread; a through hole is provided on the fixed part, and the movable part is located on the side of the through hole. By setting the main body and the ring, when the ring moves close to the movable part, the end of the movable part can be quickly clamped to the cervix, effectively preventing the cervical os from dilating, making it convenient for the user to use medication for pregnancy protection, and ensuring the efficiency of the cervical cerclage.

[0005] However, the existing cervical cerclage sleeve is inconvenient to operate during cerclage and removal, and has a 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, low manufacturing cost, convenient operation during cerclage and removal, and is easy to perform surgery.

[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 shrinkable tube. At least two sections of the inner wall of the threaded tube are provided with a plurality of protrusions along the circumferential direction, and the plurality of protrusions are arranged in a spiral shape. The shrinkable tube is provided with a through hole corresponding to the protrusion, the shrinkable tube is arranged in the threaded tube, and the protrusion is inserted into the through hole to expand and fix the shrinkable tube, and one end of the threaded tube is provided with a rotating operating part.

[0009] Furthermore, the rotating operating part is a strip plate connected to the outer wall of the threaded tube.

[0010] Furthermore, each section of the threaded tube inner wall is provided with four protrusions, which are arranged in a cross shape.

[0011] Furthermore, 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°.

[0012] Furthermore, the shrink tube is a high-elasticity silicone 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 parts, a plastic threaded tube and a shrink tube, and has a simple structure and low manufacturing cost. Before use, the shrink tube is fixed to the inner wall of the threaded tube by a protrusion. During use, after the shrink tube reaches the cervix, the threaded tube can be separated from the through hole of the shrink tube by rotating the rotating operating part in the direction opposite to the vortex of the protrusion, and the shrink tube is tightly sleeved on the cervix under the action of elastic force, and the cervical cerclage operation is quick and convenient. When the cervical cerclage sleeve needs to be removed, the shrink tube can be everted with a vascular clamp or cut with blunt-head scissors, and the operation is also simple and convenient.

[0015] In addition, when a reinforced cerclage suture operation is required, the through hole on the shrink tube can be used as an entry and exit indicator point for the surgical needle, making the operation easier to perform; the shrink tube can also relieve the pressure and shear force of the suture on the cervical tissue, avoiding cervical lacerations. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a cross-sectional view of a cervical cerclage set of the present invention.

[0018] Wherein: 1. threaded tube; 11. protruding portion; 12. rotating operating portion; 2. shrink tube; 21. through hole. DETAILED DESCRIPTION

[0019] Many specific details are described in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from the description, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] like Figure 1 , 2As shown, a cervical cerclage sleeve includes a plastic threaded tube 1 and a shrink tube 2. At least two sections of the inner wall of the threaded tube 1 are provided with a plurality of protrusions 11 along the circumferential direction, and the plurality of protrusions 11 are arranged in a spiral shape. The shrink tube 2 is provided with through holes 21 corresponding to the protrusions 11. The shrink tube 2 is arranged in the threaded tube 1, and the protrusions 11 penetrate into the through holes 21 to expand and fix the shrink 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 threaded tube 1 can be provided with protrusions at alternate sections, or each section can be provided with protrusions, and the positions of the protrusions 11 of two adjacent sections are staggered by 45 degrees, preferably the latter.

[0022] One end of the threaded tube 1 is provided with a rotating operation part 12. The rotating operation part 12 can be the end surface of the threaded tube, or a concave part, or a convex part, preferably a strip plate protruding from the outer wall of the threaded tube 1, to facilitate the rotating operation. The shrink tube 2 is preferably a high-elasticity silicone tube.

[0023] The cervical cerclage set of the present invention is used as follows:

[0024] 1. First, use a vaginal speculum or retractor to expose the cervix, trim the cervical cerclage sleeve along the concave part of the threaded tube to an appropriate length according to the length of the cervix, then put the cervical cerclage sleeve on the cervical clamp (rotate the operating part 12 toward the cervix), clamp the cervix, and push the threaded tube 1 to the upper end of the cervix to reach the vaginal vault.

[0025] 2. Press Figure 2 The arrow scheme rotates the rotating operation part 12 of the threaded tube 1 to peel off the threaded tube 1 section by section from top to bottom, and the protrusion 11 of the inner wall of the threaded tube 1 obliquely inserted into the shrink tube 2 is released from the through hole 21, releasing its fixation on the shrink tube 2, and the shrink tube 2 elastically shrinks and tightens the cervix to close to the external cervical os. The high-elastic silicone tube tied on the cervix can maintain the closed state of the cervical canal and strengthen the support force on the internal cervical os or upper segment.

[0026] 3. If cervical cerclage reinforcement is required, the shrink tube 2 can be used to restore the dilated cervix to its normal shape. The through hole 21 on the shrink tube can be used as a needle entry and exit indicator, making the cerclage suture operation easier to perform; the shrink tube 2 also relieves the pressure and shear force of the suture on the cervical tissue, avoiding cervical laceration.

[0027] 4. Before delivery, the shrink tube 2 can be removed by clamping the upper end with a vascular clamp to turn it outward or by cutting the shrink tube 2 with blunt-tipped scissors, which is simple and convenient.

[0028] The above are only 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, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cervical cerclage set, Features: It comprises a plastic threaded tube and a shrinkable tube, wherein at least two sections of the inner wall of the threaded tube are provided with a plurality of protrusions along the circumferential direction, and the plurality of protrusions are arranged in a spiral shape, and the shrinkable tube is provided with through holes corresponding to the protrusions, and the shrinkable tube is arranged in the threaded tube, and the protrusions penetrate into the through holes to expand and fix the shrinkable tube, and a rotating operating part is provided at one end of the threaded tube.

2. The cervical cerclage set according to claim 1, Features: 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, Features: 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, Features: 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 degrees.

5. The cervical cerclage set according to claim 4, Features: The shrink tube is a high-elasticity silicone tube.

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