Deformable cervical pessary

Abstract

The present invention discloses a deformable cervical support, comprising: an inner ring body (1), an outer ring body (2) and a valve body (3); the inner ring body (1) is a hollow ring body, and the inner ring body (1) defines a hollow loop (12) for entrapping the cervix; the outer ring body (2) is a hollow ring body, and the outer ring body (2) defines a cylindrical inner space (23); the inner ring body (1) is located in the inner space (23) of the outer ring body (2); the inner ring body (1) and the outer ring body (2) are joined together to define a closed chamber; the valve body (3) is mounted on the outer ring body (2) and is fluidically connected to the closed chamber; wherein, under the action of the same magnitude of force, the deformation of the inner ring body (1) is greater than that of the outer ring body (2). By using the deformable cervical support, the shape of the cervical opening can be adjusted according to demand by injecting different amounts of liquid or gas into the closed chamber.

Description

Technical Field

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

[0002] Cervical insufficiency, also known as incomplete closure of the internal cervix or cervical laxity, is characterized by a reduced cervical fibrous tissue, elastic fibers, and smooth muscle. Alternatively, due to the disruption of the internal cervical fibrous tissue, the isthmic sphincter muscle becomes less effective, resulting in pathological dilation and laxity of the cervix. Symptoms of cervical insufficiency include premature birth and recurrent miscarriages in the middle and late stages of pregnancy.

[0003] For the above-mentioned cervical insufficiency, the existing technical solution is to adopt cervical cerclage, which is a cervical cerclage performed by threading the rear end of a surgical needle to tie up the cervix. Therefore, cervical cerclage is a traumatic operation.

[0004] Cervical pessary, also known as pessary, is a medical device used to treat cervical insufficiency as mentioned above. It is an economical, simple, safe and effective product.

[0005] The purpose of existing cervical pessaries is to maintain the shape of the cervical opening when placed, preventing the cervical opening from dilating as the gestational age increases. Therefore, they should be placed in the early stages of pregnancy. The inventors have found that existing cervical pessaries have the following two main disadvantages:

[0006] 1. Some pregnant women who are found to have cervical insufficiency in the late stages of pregnancy have lost the opportunity for insertion due to excessive dilation of the cervix.

[0007] 2. When the cervix is stimulated, it will initiate contractions, which will cause the cervical opening to continue to dilate. The existing cervical pessary can only maintain the state of the cervical opening when it is placed, and does not have the function of resisting the expansion inward and thus closing the cervical opening.

[0008] Therefore, there is a current clinical need for a cervical pessary that can change the shape of the cervical opening according to the shape of the uterus, vagina, and direction of the cervical opening, and has the ability to resist inward expansion pressure. Summary of the Invention

[0009] The purpose of the present invention is to provide a deformable cervical pessary that can encircle the cervical os and prevent the relaxed cervical os from further dilating, thereby avoiding premature birth.

[0010] The embodiment of the present invention relates to a deformable cervical pessary, comprising: an inner ring body 1, an outer ring body 2 and a valve body 3;

[0011] The inner ring body 1 is a hollow ring body, and the inner ring body 1 defines a hollow snare 12 for entrapping the cervix;

[0012] The outer ring body 2 is a hollow ring body, and the outer ring body 2 defines a cylindrical inner space 23;

[0013] The inner ring body 1 is located in the inner space 23 of the outer ring body 2; the inner ring body 1 and the outer ring body 2 are joined together to define a closed chamber;

[0014] The valve body 3 is mounted on the outer ring body 2 and is fluidically connected to the sealed chamber;

[0015] Among them, under the action of the same magnitude of force, the deformation of the inner ring body 1 is greater than the deformation of the outer ring body 2.

[0016] In another preferred embodiment, the inner ring body 1 includes a first outer side wall 13 and a first inner side wall 14 , wherein the first outer side wall 13 is recessed inward and the first inner side wall 14 is arched inward, thereby defining a cerclage track 11 .

[0017] In another preferred embodiment, the outer ring body 2 includes a second outer side wall 21 and a second inner side wall 22 , the second inner side wall 22 surrounds and defines the inner space 23 , and the second outer side wall 21 arches outward.

[0018] In another preferred embodiment, the outer ring body 2 is embedded in the cerclage track 11 , and the closed chamber is defined between the first outer side wall 13 and the second inner side wall 22 .

[0019] In another preferred example, the valve body 3 is a one-way valve.

[0020] In another preferred embodiment, the first end of the valve body 3 is fixed on the second outer side wall 21 of the outer ring body 2, and the second end of the valve body 3 extends into the closed chamber.

[0021] In another preferred embodiment, the first end of the valve body 3 is adapted to the injection head of the syringe, and the second end of the valve body 3 is a wedge-shaped structure.

[0022] In another preferred embodiment, the inner ring body 1 is made of soft medical silicone material.

[0023] In another preferred embodiment, the outer ring body 2 is made of hard medical silicone material.

[0024] In another preferred embodiment, the valve body 3 is made of soft medical silicone material.

[0025] It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features specifically described below (such as in the embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be described in detail here.

[0026] Compared with the prior art, the main differences and effects of the embodiments of the present invention are:

[0027] The present invention provides a deformable cervical pessary. Liquid or gas is injected into the sealed chamber defined by the inner ring body 1 and the outer ring body 2 through a valve body 3. Under the same pressure, the deformation of the inner ring body 1 is greater than that of the outer ring body 2, thereby generating a compressive force toward the hollow loop of the inner ring body, thereby sealing the cervical os. Using this deformable cervical pessary, the shape of the cervical os can be adjusted as needed by injecting different amounts of liquid or gas into the sealed chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of a deformable cervical pessary in the first embodiment of the present invention;

[0029] Figure 2 This is a side view of a deformable cervical pessary in the first embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the structural decomposition of a deformable cervical pessary in the first embodiment of the present invention;

[0031] Figure 4 This is a side view of the inner ring body 1 of a deformable cervical pessary in the first embodiment of the present invention;

[0032] Figure 5 1 is a top view of the inner ring body 1 of a deformable cervical pessary in the first embodiment of the present invention.

[0033] It should be understood that the drawings of the present invention are for illustrative purposes only and are not drawn to scale unless otherwise specified.

[0034] Reference numerals:

[0035] 1 inner ring body; 2 outer ring body; 3 valve body; 11 cerclage track; 12 hollow snare; 13 first outer side wall; 14 first inner side wall; 21 second outer side wall; 22 second inner side wall; 23 internal space. DETAILED DESCRIPTION

[0036] In the following description, many technical details are provided to help readers better understand this application. However, those skilled in the art will understand that even without these technical details and the various changes and modifications based on the following embodiments, the technical solutions claimed in the claims of this application can be implemented.

[0037] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0038] A first embodiment of the present invention relates to a deformable cervical pessary.

[0039] Figure 1-Figure 5 It is a structural schematic diagram of the deformable cervical pessary.

[0040] First, it should be noted that, as used herein, the term "inner" refers to the direction in which the cervical pessary is close to the cervical os when in use, and "outer" refers to the direction in which the cervical pessary is away from the cervical os.

[0041] Specifically, if Figure 1-Figure 5 As shown, the deformable cervical support comprises: an inner ring body 1, an outer ring body 2 and a valve body 3;

[0042] The inner ring body 1 is a hollow ring body, and the inner ring body 1 defines a hollow snare 12 for entrapping the cervix.

[0043] The outer ring body 2 is a hollow ring body, and the outer ring body 2 defines a cylindrical inner space 23 .

[0044] For example Figure 1 As shown, the inner ring body 1 is located in the inner space 23 of the outer ring body 2; the inner ring body 1 and the outer ring body 2 are joined together to define a closed chamber (not shown).

[0045] like Figure 3 and Figure 4 As shown, the inner ring body 1 includes a first outer side wall 13 and a first inner side wall 14 . The first outer side wall 13 is recessed inward and the first inner side wall 14 is arched inward, thereby defining a cerclage track 11 .

[0046] The outer ring body 2 includes a second outer side wall 21 and a second inner side wall 22 . The second inner side wall 22 defines the inner space 23 , and the second outer side wall 21 arches outward.

[0047] The inner ring body 1 is located in an internal space 23 defined by the second inner sidewall 22 of the outer ring body 2 . The outer ring body 2 is embedded in the cerclage track 11 . The closed chamber is defined between the first outer sidewall 13 and the second inner sidewall 22 .

[0048] The valve body 3 is mounted on the outer ring body 2 and is fluidically connected to the sealed chamber.

[0049] Among them, under the action of the same magnitude of force, the deformation of the inner ring body 1 is greater than the deformation of the outer ring body 2.

[0050] Specifically, the material of the inner ring body 1 is soft and easily deformed when subjected to force; the material of the outer ring body 2 is hard and not easily deformed when subjected to force.

[0051] In this embodiment, preferably, the inner ring body 1 is made of a soft medical silicone material, and the outer ring body 2 is made of a hard medical silicone material.

[0052] In this embodiment, preferably, the valve body 3 is a one-way valve.

[0053] The first end of the valve body 3 is fixed on the second outer side wall 21 of the outer ring body 2 , and the second end of the valve body 3 extends into the sealed chamber.

[0054] Furthermore, preferably, the first end of the valve body 3 is adapted to the injection head of the syringe, and the second end of the valve body 3 is a wedge-shaped structure. In addition, the valve body 3 is made of a fully soft material, for example, the valve body 3 is made of a soft medical silicone material.

[0055] During clinical use, the deformable cervical splint is placed over the patient's cervical os, so that the cervical os is encased within the hollow snare 12. The syringe's injection tip is then connected to the first end of the valve body 3, and liquid or gas is injected into the sealed chamber through the one-way valve body 3. Because the inner ring 1 deforms more easily than the outer ring 2 under the same pressure, the pressure of the liquid or gas injected into the sealed chamber is primarily transmitted to the inner ring 1, generating a compressive force inward (i.e., toward the hollow snare 12), thereby occluding the cervix.

[0056] By using the deformable cervical support, the shape of the cervical opening can be adjusted according to needs by injecting different amounts of liquid or gas into the closed chamber.

[0057] It should be noted that in the claims and description of this patent, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "including a" does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0058] While the present invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. A deformable cervical pessary, characterized in that: include: Inner ring body (1), outer ring body (2) and valve body (3); The inner ring body (1) is a hollow ring body, and the inner ring body (1) defines a hollow snare (12) for snare the cervix; The outer ring body (2) is a hollow ring body, and the outer ring body (2) surrounds and defines a cylindrical inner space (23); The inner ring body (1) is located in the inner space (23) of the outer ring body (2); the inner ring body (1) and the outer ring body (2) are joined together to define a closed chamber; The valve body (3) is mounted on the outer ring body (2) and is fluidically connected to the sealed chamber; Wherein, under the action of the same magnitude of force, the deformation of the inner ring body (1) is greater than the deformation of the outer ring body (2); The inner ring body (1) comprises a first outer side wall (13) and a first inner side wall (14), wherein the first outer side wall (13) is recessed inward and the first inner side wall (14) is arched inward, thereby defining a cerclage track (11); The outer ring body (2) comprises a second outer side wall (21) and a second inner side wall (22), wherein the second inner side wall (22) surrounds and defines the inner space (23), and the second outer side wall (21) arches outward; The outer ring body (2) is embedded in the cerclage track (11), and the first outer side wall (13) and the second inner side wall (22) define the closed chamber; The valve body (3) is a one-way valve; The first end of the valve body (3) is fixed on the second outer side wall (21) of the outer ring body (2), and the second end of the valve body (3) extends into the closed chamber.

2. The deformable cervical pessary according to claim 1, characterized in that: The first end of the valve body (3) is adapted to the injection head of the syringe, and the second end of the valve body (3) is a wedge-shaped structure.

3. The deformable cervical pessary according to claim 1, characterized in that: The inner ring body (1) is made of soft medical silicone material.

4. The deformable cervical pessary according to claim 1, characterized in that: The outer ring body (2) is made of hard medical silica gel material.

5. The deformable cervical pessary according to claim 1, characterized in that: The valve body (3) is made of soft medical silicone material.

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