Cervical retractor

Abstract

The utility model discloses a cervical contractor which comprises an elastic constriction piece which is suitable for being hooped on a cervical canal so as to seal a cervical opening. The elastic contraction piece comprises a lantern ring part and a holding structure, and the lantern ring part is suitable for being arranged on the cervical canal in a sleeving mode; the enclasping structure is arranged in the circumferential direction of the lantern ring part in a surrounding mode and can tighten the cervical canal. According to the cervical contractor provided by the embodiment of the utility model, the cervical contractor can be flexibly hooped on a cervical canal to realize effective sealing of a cervical orifice, so that premature delivery of a fetus is prevented. Compared with a traditional method, the operation process is greatly simplified through the design, complex suture and suture removing processes are not needed, and the infection risk and the complication occurrence rate are remarkably reduced. Meanwhile, due to the elastic characteristic, appropriate adjustment can be conducted according to natural changes of the cervix uteri, the comfort level of the pregnant woman is improved, and discomfort is reduced. In addition, by means of the non-invasive design, damage to cervical tissue is greatly reduced, and psychological burden is relieved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a cervical contraction device. Background Technology

[0002] In clinical practice, miscarriage remains a significant problem troubling both pregnant women and healthcare workers. Statistics show that approximately 30% of pregnant women experience signs of miscarriage, placing immense physical and psychological stress on them and posing a serious challenge to the healthcare system. To prevent miscarriage, the medical community has been continuously exploring various effective methods and techniques.

[0003] Currently, there are various methods for preventing miscarriage, one of the commonly used techniques being cervical suturing. This method is mainly used for pregnant women with cervical insufficiency or a history of premature birth. The procedure involves suturing the cervix with sutures during the fertile window to strengthen its support and prevent miscarriage. After the fertile window has passed, the doctor will remove the sutures at an appropriate time, allowing the cervix to return to its normal state and preparing for delivery. However, this method of suturing the cervix requires suture placement and removal, which is not only cumbersome but also adds extra pain and burden to the pregnant woman. Utility Model Content

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the purpose of this invention is to provide a cervical contraction device.

[0005] To achieve the above objectives, the cervical contraction device according to an embodiment of the present invention includes an elastic contraction member, which is adapted to clamp onto the cervical canal to close the cervical opening.

[0006] The cervical contraction device provided in this embodiment of the invention can flexibly clamp onto the cervical canal, effectively closing the cervical opening and thus preventing premature delivery of the fetus. Compared with traditional methods, this design greatly simplifies the operation process, eliminating the need for complex suturing and suture removal, and significantly reducing the risk of infection and the incidence of complications. Simultaneously, due to its elastic properties, it can be moderately adjusted according to the natural changes of the cervix, improving the comfort of pregnant women and reducing discomfort. Furthermore, this non-invasive design greatly reduces damage to cervical tissue and alleviates psychological burden.

[0007] In addition, the cervical contraction device according to the above embodiments of this utility model may also have the following additional technical features:

[0008] According to one embodiment of the present invention, the elastic contraction member includes:

[0009] A loop portion, the loop portion being adapted to be fitted onto the cervical canal;

[0010] A clamping structure is arranged circumferentially around the collar portion and is capable of tightening the cervical canal.

[0011] According to one embodiment of the present invention, at least one of the collar portion and the clamping structure has an anti-slip structure on its inner surface for contacting the cervical canal.

[0012] According to one embodiment of the present invention, the clamping structure includes

[0013] The beaded ring portion is axially spaced from the collar portion;

[0014] Multiple arm bars are located between the collar portion and the binding ring portion and are arranged circumferentially. Each arm bar extends axially, and one end of the arm bar is connected to the collar portion and the other end of the arm bar is connected to the binding ring portion. A first cutout is defined between two adjacent arm bars.

[0015] According to one embodiment of the present invention, the inner diameter of the collar portion is equal to the inner diameter of the binding ring portion.

[0016] According to one embodiment of the present invention, the elastic contraction member includes:

[0017] A central portion, wherein the central portion and the collar portion are arranged at intervals along the axial direction of the collar portion, and the central portion is located on the axial direction of the collar portion;

[0018] Multiple crown strips are located between the collar portion and the center portion and are arranged circumferentially. One end of each crown strip is connected to the collar portion, and the other end of each crown strip is connected to the center portion. The crown strips are bent from one end to the other along a predetermined trajectory so that the multiple crown strips define a crown-shaped structure. A second cutout is defined between two adjacent crown strips.

[0019] According to one embodiment of the present invention, the outer diameter of the central portion is smaller than the outer diameter of the collar portion, and the inner diameter of the collar portion is smaller than the maximum inner diameter of the crown structure.

[0020] According to one embodiment of the present invention, the crown strip is bent into a C-shape or an S-shape.

[0021] According to one embodiment of the present invention, the elastic contractile member is medical-grade silicone, medical-grade polyurethane material, or medical-grade acrylic material.

[0022] According to one embodiment of the present invention, the anti-slip structure includes a plurality of protrusions arranged in a dot matrix, wherein the protrusions are dot-shaped or strip-shaped.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of one embodiment of the cervical contraction device of this utility model from one perspective;

[0026] Figure 2 This is a schematic diagram of the structure of another embodiment of the cervical contraction device of this utility model from another perspective;

[0027] Figure 3 This is a schematic diagram of the structure of another embodiment of the cervical contraction device of this utility model from one perspective;

[0028] Figure 4 This is a structural schematic diagram of another embodiment of the cervical contraction device of this utility model from another perspective.

[0029] Figure label:

[0030] 10. Elastic shrinkable parts;

[0031] 101. The collar section;

[0032] 102. Clamping structure;

[0033] 1021. Bundle section;

[0034] 1022, arm bar;

[0035] H10, First cutout;

[0036] 1023, Crown strip;

[0037] 1024. Central part;

[0038] H11, Second cutout.

[0039] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] The cervical contraction device of this utility model is described in detail below with reference to the accompanying drawings.

[0046] Reference Figures 1 to 4 As shown, the cervical contraction device provided according to the embodiment of the present utility model includes an elastic contraction member 10, which is adapted to be clamped on the cervical canal to close the cervical opening.

[0047] The elastic contraction element 10 is made of elastic plastic material and can provide elastic contraction. When the elastic contraction element 10 is put into the cervical canal of a pregnant woman, the elastic natural contraction can tighten the cervical canal and close the cervical opening. Moreover, this elastic natural contraction is relatively gentle and has better comfort.

[0048] The cervical contraction device provided in this embodiment of the invention can flexibly clamp onto the cervical canal, effectively closing the cervical opening and thus preventing premature delivery of the fetus. Compared with traditional methods, this design greatly simplifies the operation process, eliminating the need for complex suturing and suture removal, and significantly reducing the risk of infection and the incidence of complications. Simultaneously, due to its elastic properties, it can be moderately adjusted according to the natural changes of the cervix, improving the comfort of pregnant women and reducing discomfort. Furthermore, this non-invasive design greatly reduces damage to cervical tissue and alleviates psychological burden.

[0049] In some embodiments of this utility model, the elastic contractile member 10 includes a collar portion 101 and a clamping structure 102. The collar portion 101 is adapted to be fitted onto the cervical canal. The clamping structure 102 is arranged circumferentially around the collar portion and is capable of tightening the cervical canal.

[0050] Both the loop portion 101 and the clamping structure 102 are made of elastic material. Preferably, the inner diameter of the loop portion 101 is slightly smaller than the size of the cervical canal, so that when the loop portion 101 is fitted onto the cervical canal, it can elastically bind to the cervical canal. The clamping structure 102 is integrated with the loop portion 101. The clamping structure 102 can be a circumferential clamp-like structure, which is elastic and has space at the outer end of the cervical canal. When the loop portion 101 is stretched and installed onto the cervical canal, the loop portion 101 can elastically contract to fix and tighten the cervical canal. At the same time, the clamping structure 102 also clamps onto the cervical canal, generating an inward elastic force, thereby gently tightening the cervical canal.

[0051] In practical application, doctors first use dilators or other tools to open the pregnant woman's vagina, and then, with the aid of installation tools or by hand, slip the elastic constriction element 10 onto the pregnant woman's cervical canal. The loop portion 101 is located on the end of the cervical canal near the internal os, while the clamping structure 102 is located on the end of the cervical canal near the external os. Utilizing the natural elastic contraction of the loop portion 101 and the clamping structure 102, the cervical canal can be gently tightened. The entire installation process usually only takes a few minutes.

[0052] In this embodiment, the structure of the elastic contractile member 10 described above is adopted. The collar portion 101 allows it to be securely fitted onto the cervical canal, providing basic support and positioning for the entire cervical contraction device. At the same time, it provides an elastic contraction and tightening effect, constricting the cervical canal. The clamping structure 102 can flexibly and reliably tighten the cervical canal, achieving effective closure of the cervical os. This dual-structure design significantly improves the stability and reliability of the cervical contraction device.

[0053] Preferably, the inner surface of at least one of the collar portion 101 and the clamping structure 102 is provided with an anti-slip structure for contacting the cervical canal. When the elastic contraction member 10 is installed on the cervical canal, on the one hand, under the action of elastic contraction, sufficient positive pressure is provided so that the inner surfaces of the collar portion 101 and the clamping structure 102 are tightly bonded to the outer surface of the cervical canal. On the other hand, the anti-slip structure on the inner surfaces of the collar portion 101 and the clamping structure 102 can increase the friction between the two, thereby achieving a good anti-slip effect. This makes the elastic contraction member 10 more securely fixed on the cervical canal and less prone to falling off, thus improving the reliability of the cervical contraction device.

[0054] For example, the anti-slip structure includes a plurality of protrusions arranged in a dot matrix, wherein the protrusions are dot-shaped or strip-shaped.

[0055] Reference Figures 1 to 2 As shown, in one embodiment of the present invention, the clamping structure 102 includes a clamping ring portion 1021 and a plurality of arm bars 1022, wherein the clamping ring portion 1021 and the collar portion 101 are arranged axially at intervals.

[0056] Multiple arm strips 1022 are located between the collar portion 101 and the binding ring portion 1021 and are arranged circumferentially at intervals. Each arm strip 1022 extends axially, with one end connected to the collar portion 101 and the other end connected to the binding ring portion 1021. A first cutout H10 is defined between two adjacent arm strips 1022. In this embodiment, there are four arm strips 1022, each evenly distributed circumferentially at a 90-degree angle. Preferably, the arm strips 1022, collar portion 101, and binding ring portion 1021 are integrally formed, resulting in a simpler structure and more uniform and stable elastic deformation.

[0057] In other words, in this embodiment, the binding ring 1021, the collar 101, and the multiple arm strips 1022 are connected to form a sleeve-like structure, and the peripheral wall of the sleeve-like structure is hollowed out to form a first hollow opening H10. This hollow structure has two advantages: firstly, when the cervical contraction device is fitted onto the cervical canal, the first hollow opening H10 reduces the area of ​​blood vessels compressed in the cervical canal, thus ensuring smooth blood flow. Secondly, cervical tissue can enter the first hollow opening H10 to a certain extent, forming a fixed position, making the cervical contraction device more stable on the cervical canal and less prone to falling off. Furthermore, this hollow structure has better deformation adaptability when tightening the cervical canal, making it gentler and more comfortable for the user, resulting in a better user experience.

[0058] Preferably, the inner diameter of the collar portion 101 is equal to the inner diameter of the binding ring portion 1021. In this structure, the cervical contraction element is a regular cylindrical sleeve structure. Normally, the cervical canal is similar to a cylinder; therefore, setting the cervical contraction element as a cylindrical sleeve structure provides better fit with the cervical canal and more even force distribution when constraining the cervical canal. Furthermore, it is more convenient to use and simpler to manufacture.

[0059] Reference Figures 3 to 4 As shown, in another embodiment of this utility model, the elastic contractile member 10 includes a central portion 1024 and a plurality of crown strips 1023. The central portion 1024 and the collar portion 101 are arranged at intervals along the axial direction of the collar portion 101, and the central portion 1024 is located on the axis of the collar portion 101. Exemplarily, the central portion 1024 is a circular sheet structure. The central portion 1024, the collar portion 101, and the plurality of crown strips 1023 are integrally formed.

[0060] Multiple crown strips 1023 are located between the collar portion 101 and the central portion 1024 and are arranged circumferentially at intervals. One end of each crown strip 1023 is connected to the collar portion 101, and the other end of each crown strip 1023 is connected to the central portion 1024. The crown strips 1023 are bent from one end to the other along a predetermined trajectory so that the multiple crown strips 1023 define a crown-shaped structure. A second opening H11 is defined between two adjacent crown strips 1023. In this embodiment, there are four crown strips 1023, and each crown strip 1023 is evenly distributed circumferentially at an included angle of 90 degrees.

[0061] In other words, in this embodiment, the central portion 1024, the loop portion 101, and multiple crown strips 1023 form a crown-like structure. Simultaneously, the peripheral wall of this crown-like structure is hollowed out to form a second perforation H11. During installation, the doctor places the loop portion 101 near the internal os of the cervix, ensuring that the crown-like structure is securely fastened to the cervical canal, while the central portion 1024 is close to the external os of the cervix. The elastic deformation of the loop portion 101 and the crown strips 1023 effectively tightens the cervical canal.

[0062] The coronal structure design provides better coverage, allowing the cervical canal to be closed while the external os of the cervix is ​​blocked and closed by the central part 1024, thus improving the sealing effect. Furthermore, the perforated peripheral wall of the coronal structure also reduces the area of ​​blood vessels compressed in the cervical canal, ensuring smooth blood flow. Cervical tissue can, to a certain extent, enter into the second perforated opening H11, forming a fixed position. This makes the cervical contraction component more stable on the cervical canal, less prone to dislodgement, and provides better deformation adaptability when tightening the cervical canal. It is also gentler and more comfortable for the user, resulting in a better user experience.

[0063] Preferably, the outer diameter of the central portion 1024 is smaller than the outer diameter of the loop portion 101, and the inner diameter of the loop portion 101 is smaller than the maximum inner diameter of the coronal structure. This design allows the coronal strip 1023 to have a greater curvature, thereby forming a smoother and more complete coronal structure, and allows for more sufficient perforation of the peripheral wall of the coronal structure, resulting in a larger second perforation opening H11 and less compression of the cervical canal vessels. Simultaneously, the smaller inner diameter of the loop portion 101 provides more sufficient radial tightening.

[0064] For example, the coronal strip 1023 is bent into a C-shape or an S-shape, so that the internal space of the coronal structure is larger, which can improve its adaptability to different cervical canals.

[0065] It is understandable that the elastic contractile component 10 is made of medical-grade silicone, medical-grade polyurethane, or medical-grade acrylic materials. These elastic materials have excellent biocompatibility and elastic deformation properties, which can meet medical needs.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A cervical constrictor, characterized in that, The elastic shrinkable member is adapted to be clamped on the cervical canal to close the cervical orifice. The elastic shrinkable member comprises a collar portion and a clamping structure, the collar portion is adapted to be sleeved on the cervical canal, and the clamping structure is arranged around the collar portion in the circumferential direction and is capable of tightening the cervical canal. The clamping structure comprises a ring portion and a plurality of arm strips, the ring portion is arranged axially spaced apart from the collar portion, the plurality of arm strips are located between the collar portion and the ring portion and are arranged spaced apart in the circumferential direction, each arm strip extends in the axial direction, one end of the arm strip is connected to the collar portion, the other end of the arm strip is connected to the ring portion, and a first hollow opening is defined between adjacent two arm strips.

2. The cervical constrictor according to claim 1, characterized in that An inner surface of at least one of the collar portion and the clamping structure is provided with an anti-skid structure for contacting the cervical canal.

3. The cervical constrictor according to claim 1, characterized in that, An inner diameter of the collar portion is equal to an inner diameter of the ring portion.

4. The cervical constrictor according to claim 2, characterized in that, The anti-skid structure comprises a plurality of projections arranged in a dot matrix, the projections are dot-shaped or strip-shaped.

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