Combined contraceptive ring

Abstract

The utility model relates to the technical field of medical instruments, in particular to a combined contraceptive ring. According to the combined contraceptive ring, a contraceptive mechanism, a positioning mechanism and a pushing mechanism used for pushing the positioning mechanism and the contraceptive mechanism are movably connected in a guide sleeve, the contraceptive mechanism comprises an anti-falling wire rope penetrating through the positioning mechanism, a barb mechanism is arranged at the end of the anti-falling wire rope, the barb mechanism comprises a plurality of barbs, and the barbs are arranged in the guide sleeve. And the barbs are condensed and bound in the positioning mechanism, so that the barbs do not collide with the uterine cavity due to the contraction activity of the uterine cavity, and the comfort and the stability of the novel contraceptive ring are improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a combined intrauterine device (IUD). Background Technology

[0002] Endometriosis, especially adenomyosis, is a common gynecological disease, mainly characterized by progressive dysmenorrhea and heavy menstrual bleeding, causing serious distress to women's lives. Currently, systemic medications such as oral or injectable drugs have significant side effects, and surgical hysterectomy can cause irreversible damage, leading to infertility, premature menopause, and pelvic floor dysfunction. Therefore, most women of childbearing age cannot undergo surgical treatment. In this context, conservative treatment has gained considerable attention. In recent years, the Mirena intrauterine device (LNG-IUS, levonorgestrel intrauterine system) has been used as a conservative treatment option for dysmenorrhea, endometriosis, adenomyosis, and related conditions, achieving satisfactory results. It is characterized by its simplicity, minimal side effects, and good efficacy, effectively reducing endometriosis lesions, shrinking the uterus, and alleviating related symptoms such as dysmenorrhea, heavy menstrual bleeding, and even anemia.

[0003] The Mirena IUD is currently the only available local hormonal contraceptive method. It has a small, slow-release progesterone structure. After being inserted into the uterine cavity, the Mirena IUD slowly and steadily releases a low dose of levonorgestrel, ensuring that for five to six years after placement in the ovarian cavity, it can consistently release a small amount of progesterone into the ovary. This keeps the cervix, uterine cavity environment, and ovarian endometrium in an unsuitable state for conception, thus achieving a highly reliable contraceptive effect. At the same time, because the ovarian endometrium is in a dormant state, it also reduces menstrual flow, shortens menstrual bleeding time, and relieves menstrual pain.

[0004] However, traditional Mirena IUDs, once placed in the uterine cavity, often experience displacement or even expulsion, leading to complications.

[0005] Therefore, there is an urgent need to provide a new combination IUD to solve this problem. Utility Model Content

[0006] The purpose of this invention is to solve at least one of the technical problems existing in the prior art and to provide a combined intrauterine device (IUD).

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A combined contraceptive ring includes a guide sleeve, within which a contraceptive mechanism, a positioning mechanism, and a pushing mechanism for pushing the positioning mechanism and the contraceptive mechanism are movably connected. The contraceptive mechanism includes an anti-detachment cord that passes through the positioning mechanism. The end of the anti-detachment cord is provided with a barb mechanism, which includes a plurality of barbs that are constricted and bound within the positioning mechanism. A connecting tube is connected to the anti-detachment cord, and levonorgestrel is disposed inside the connecting tube.

[0008] Furthermore, the barb mechanism includes a plurality of barbs located at the ends of the anti-loosening cord, and the plurality of barbs are retracted and bound within the positioning sleeve.

[0009] Furthermore, the barbs are barbed.

[0010] Furthermore, several of the aforementioned barbs are symmetrically arranged and made of shape memory alloy material.

[0011] Furthermore, the positioning mechanism includes a positioning sleeve, the end of which is provided with a puncture portion.

[0012] Furthermore, the pushing mechanism includes a first pushing rod and a second pushing rod. The first pushing rod is connected to the positioning sleeve, and the second pushing rod is connected to the barb mechanism. The second pushing rod is sleeved inside the first pushing rod.

[0013] Furthermore, a first slider is connected to the first push rod, and a second slider is connected to the second push rod. The second slider is located inside the first push rod, and the first slider is provided with a guide channel for the movement of the second slider. The anti-slip rope passes through the second slider and the first slider.

[0014] Furthermore, the guide sleeve surface is provided with scale lines.

[0015] Furthermore, an outer membrane is provided on the outer periphery of the connecting tube, and the levonorgestrel is disposed between the outer membrane and the inner wall of the connecting tube.

[0016] Furthermore, the connecting tubes include several, and the several connecting tubes are arranged at intervals on the anti-slip rope.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] The IUD of this application is first positioned in the myometrium by puncture with a positioning sleeve, then the barb mechanism is extended to release the barbs into the uterine muscle, and finally the positioning sleeve is retracted to achieve stable fixation of the IUD, so that it will not cause resistance to the uterine cavity due to the contraction of the uterine cavity, thereby improving the comfort and stability of the new IUD. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the combined IUD in a preferred embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the combined IUD in a preferred embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the contraceptive mechanism in a preferred embodiment of the present invention.

[0022] Reference numerals in the attached drawings: 1. Guide sleeve; 2. Anti-slip rope; 3. Barb; 4. Connecting tube; 5. Pushing mechanism; 501. First push rod; 502. Second push rod; 503. First slider; 504. Second slider; 6. Positioning sleeve. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0024] Reference Figures 1-3 As shown in the preferred embodiment of this utility model, a combined intrauterine device (IUD) includes a guide sleeve 1. A contraceptive mechanism, a positioning mechanism, and a pushing mechanism 5 are movably connected within the guide sleeve 1. The contraceptive mechanism includes an anti-detachment cord 2 that passes through the positioning mechanism. The end of the anti-detachment cord 2 is provided with a barb mechanism, which includes several barbs 3. These barbs 3 are contracted and bound within the positioning mechanism. A connecting tube 4 is connected to the anti-detachment cord 2. The connecting tube 4 contains levonorgestrel. This allows the IUD to be first positioned in the uterine muscle layer by the positioning sleeve 6, then the barb mechanism is pushed out to release the barbs 3 into the uterine muscle, and finally the positioning sleeve 6 is retracted. This prevents the IUD from resisting the uterine cavity due to uterine contractions, thus improving the comfort and stability of the novel IUD.

[0025] As a preferred embodiment of this utility model, it may also have the following additional technical features: the barbs 3 are hook-shaped, and a plurality of the barbs 3 are symmetrically arranged, and are made of shape memory alloy material. This allows it to be stably embedded in the uterine muscle after the positioning sleeve 6 is extended.

[0026] In this embodiment, the positioning mechanism includes a positioning sleeve 6, the end of which is provided with a puncture portion. This allows it to penetrate into the uterine muscle layer, facilitating the subsequent release of barbs to pierce the uterine muscle.

[0027] In this embodiment, the pushing mechanism 5 includes a first pushing rod 501 and a second pushing rod 502. The first pushing rod 501 is connected to the positioning sleeve 6, and the second pushing rod 502 is connected to the barb mechanism. The second pushing rod 502 is sleeved inside the first pushing rod 501. A first slider 503 is connected to the first pushing rod 501, and a second slider 504 is connected to the second pushing rod 502. The second slider 504 is located inside the first pushing rod 501, and the first slider 503 is provided with a guide channel for the second slider 504 to move. The anti-detachment rope 2 passes through the second slider 504 and the first slider 503. Thus, by pushing the first slider 503, the first push rod 501 pushes the positioning sleeve 6 out of the guide sleeve 1, and the puncture part at the end of the positioning sleeve 6 allows it to penetrate and be positioned in the uterine muscle layer; when the ends of the first slider 503 and the second slider 504 are level, pushing the second slider 504 causes the second push rod 502 to push the barb 3 out of the positioning sleeve 6, so that it unfolds and is embedded in the uterine muscle; finally, under the action of an elastic element such as a spring, the second slider 504 and the first slider 503 move, so that the positioning sleeve 6 is retracted into the guide sleeve, realizing the convenient placement of the IUD.

[0028] In this embodiment, the guide sleeve 1 has scale lines on its surface. This makes it easier to determine the placement position of the IUD.

[0029] In this embodiment, an outer membrane is provided around the periphery of the connecting tube 4, and the levonorgestrel is disposed between the outer membrane and the inner wall of the connecting tube 4. Therefore, when the IUD is inserted into the uterine cavity, levonorgestrel can be continuously and slowly released outwards, thus providing contraception while also treating other conditions. This enhances the functionality of the new IUD while ensuring its comfort.

[0030] In this embodiment, the connecting tubes 4 include several units, which are spaced apart on the anti-loosening cord. This allows the connecting tubes 4 to swing along with the inner wall of the uterine cavity during contraction, thus preventing contact between the connecting tubes 4 and the uterine cavity wall and improving the comfort of the new IUD. The connecting tubes 4 are made of polyethylene. Because polyethylene has good elasticity, the entire IUD will not affect the uterine cavity when placed inside.

[0031] The working principle of this invention is as follows: During use, the IUD is inserted into the uterine cavity through the guide sleeve 1. Then, the positioning sleeve 6 is pushed out of the guide sleeve 1 by the first push rod 501, and its puncture point at the end of the positioning sleeve 6 allows it to penetrate and be positioned within the uterine muscle layer. Next, the barbs 3 are pushed out of the positioning sleeve 6 by the second push rod 502, allowing them to unfold and embed themselves within the uterine muscle, thus achieving stable fixation of the IUD. Simultaneously, when the uterine cavity contracts, the multiple connecting tubes 4 are connected in series via connectors. Therefore, during uterine cavity contractions, the multiple connecting tubes 4 swing with the movement of the uterine cavity wall, thus preventing contact between the connecting tubes 4 and the uterine cavity wall, improving the comfort of the new IUD. Furthermore, the levonorgestrel inside the connecting tubes 4 can be slowly released outward through the outer membrane, which isolates the levonorgestrel inside the connecting tubes 4. This allows the levonorgestrel to be released continuously and slowly, thus providing contraception while also treating other conditions, enhancing the functionality of the new IUD while ensuring its comfort.

[0032] Without causing conflict, those skilled in the art can freely combine and use the above-mentioned additional technical features.

[0033] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A combination contraceptive ring, characterized by: The device comprises a guide sleeve, a contraceptive mechanism, a positioning mechanism and a pushing mechanism for pushing the positioning mechanism and the contraceptive mechanism, the contraceptive mechanism comprises an anti-escape silk rope penetrating through the positioning mechanism, the end of the anti-escape silk rope is provided with a barb mechanism, the barb mechanism comprises a plurality of barbs, the plurality of barbs are contracted and bound in the positioning mechanism, a connecting tube is connected to the anti-escape silk rope, and levonorgestrel is arranged in the connecting tube.

2. The combination contraceptive ring of claim 1, wherein: The barb is in the shape of a barb.

3. The combination contraceptive ring of claim 1, wherein: The plurality of barbs are symmetrically arranged and made of a memory alloy material.

4. The combination contraceptive ring of claim 1, wherein: The positioning mechanism comprises a positioning sleeve, and the end of the positioning sleeve is provided with a puncture part.

5. The combination contraceptive ring of claim 4, wherein: The pushing mechanism comprises a first pushing rod and a second pushing rod, the first pushing rod is connected to the positioning sleeve, the second pushing rod is connected to the barb mechanism, and the second pushing rod is sleeved in the first pushing rod.

6. The combination contraceptive ring of claim 5, wherein: A first sliding block is connected to the first pushing rod, a second sliding block is connected to the second pushing rod, the second sliding block is located in the first pushing rod, a guide channel for the movement of the second sliding block is arranged on the first sliding block, and the anti-escape silk rope penetrates through the second sliding block and the first sliding block.

7. The combination contraceptive ring of claim 1, wherein: A scale line is arranged on the surface of the guide sleeve.

8. The combination contraceptive ring of claim 1, wherein: An outer membrane is arranged on the outer periphery of the connecting tube, and the levonorgestrel is arranged between the outer membrane and the inner wall of the connecting tube.

9. The combination contraceptive ring of claim 1, wherein: A plurality of connecting tubes are arranged on the anti-escape silk rope.

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