Mangyule ring assembly, device for pushing Mangyule ring assembly and use method

Abstract

The invention relates to a Manimony ring assembly, a device for pushing the Manimony ring assembly and a using method, the Manimony ring assembly comprises a Manimony ring and a positioning assembly, the Manimony ring comprises a longitudinal arm and a pair of supporting arms located at the top of the longitudinal arm; the positioning assembly comprises a surrounding part and an embedding part, and the surrounding part and the embedding part are connected through a connecting part; wherein the embedded part extends upwards in the direction approximately perpendicular to the plane where the surrounding part is located; the surrounding part surrounds the longitudinal arm, and the embedding part is used for being embedded into the inner wall of the uterus. After the Munyal ring and the positioning assembly are combined, the surrounding part shrinks to tightly hold the longitudinal arm, and the embedding part is implanted into the inner wall of the uterus, so that external force interference caused by uterus peristalsis can be effectively resisted, and the Munyal ring is always kept at a precise position in the uterine cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a Mirena ring assembly, a device for pushing the Mirena ring assembly, and a usage method. Background Art

[0002] Generally, the standard for placing the Mirena ring is that the size of the uterine cavity is within 10 cm. Otherwise, the Mirena ring is likely to fall off. Some patients with severe adenomyosis, even after multiple GnRHa treatments, still cannot reduce the volume of the uterus and cannot meet the indication for placing the Mirena ring. Therefore, the common response in clinical practice currently is to suture the Mirena ring in the uterine cavity under hysteroscopy and remove the suture under hysteroscopy again when it needs to be taken out. The operation is relatively difficult, increasing the surgical pain and economic cost for the patient.

[0003] Authorization Publication Number: CN 210811915 U, Application Date: August 27, 2016, Utility Model Name: A Levonorgestrel Intrauterine Sustained Release System for Preventing Falling Off. This utility model discloses a levonorgestrel intrauterine sustained release system for preventing falling off, including a vertical rod and a pull ring. The top of the vertical rod is connected with a cross arm, and a connecting arm is installed at the end of the cross arm. A connecting shaft penetrates between the cross arm and the connecting arm, and a shaping sleeve is sleeved outside the cross arm and the connecting arm. The pull ring is fixed at the bottom of the vertical rod, and a tail wire is connected to the outside of the pull ring. An active area is arranged at the lower end of the vertical rod, and a sleeve ring is sleeved outside the active area. A connecting block is arranged at the side of the sleeve ring, and a short arm is connected to the end of the connecting block. This levonorgestrel intrauterine sustained release system for preventing falling off can reduce the phenomenon of the intrauterine device falling off from the uterine cavity, increase its stability after implantation, reduce the damage to the endometrium, and is applicable to users with different uterine sizes, further avoiding the phenomenon of the intrauterine device falling off.

[0004] In the above prior art, through the symmetrically distributed short arms, whose bending mode is the same as that of the cross arm, after being implanted into the uterus, they unfold in the same way as the cross arm and are stuck at the internal os of the cervix. However, this way of abutting against the uterine inner wall cannot solve the problem that the levonorgestrel intrauterine sustained release system is prone to falling off.

[0005] In addition, for women with a larger uterine cavity, the above prior art is not very applicable. Summary of the Invention

[0006] Aiming at the problem that the levonorgestrel intrauterine sustained release system in the above prior art is prone to falling off, the present invention provides a Mirena ring assembly, a device for pushing the Mirena ring assembly, and a usage method that are not easily displaced and fallen off.

[0007] The technical solution provided by the present invention is as follows:

[0008] A Mirena coil assembly, including a Mirena coil, the Mirena coil including a longitudinal arm and a pair of support arms located at the top of the longitudinal arm; characterized in that: it further includes,

[0009] A positioning assembly, the positioning assembly including a surrounding portion and an embedding portion, the surrounding portion and the embedding portion being connected by a connecting portion;

[0010] Wherein, the embedding portion extends upward in a direction substantially perpendicular to the plane where the surrounding portion is located;

[0011] The surrounding portion surrounds the longitudinal arm, and the embedding portion is used for embedding into the uterine inner wall.

[0012] Further, the surrounding portion has two forms;

[0013] When the surrounding portion is in the first form, the surrounding portion is in a circular winding form;

[0014] When the surrounding portion is in the second form, the surrounding portion is in a contracted state for tightly holding the longitudinal arm.

[0015] Further, the surrounding portion is in an irregular shape after contraction.

[0016] Further, a plurality of barbed wires are evenly distributed in the circumferential direction of the embedding portion, and the extending direction of the barbed wires is inclined downward at a specific angle with the axis of the embedding portion.

[0017] Further, the angle range between the barbed wire and the axis of the embedding portion is 20° to 50°.

[0018] A device for pushing a Mirena coil assembly, the device being used to push the Mirena coil assembly into the uterus and fix it; the device includes,

[0019] An inner sleeve, the inner sleeve being hollow, the inner sleeve being used to accommodate the Mirena coil and provide a channel for pushing the Mirena coil;

[0020] An outer sleeve, the outer sleeve being sleeved on the inner sleeve, a first groove for accommodating the positioning assembly being provided on the upper section of the outer sleeve, and the positioning assembly being electrostatically adsorbed in a circular winding form in the first groove;

[0021] A fixing portion, the fixing portion being connected to the outer sleeve;

[0022] A propulsion assembly, the propulsion assembly including a clamping portion and a push-pull portion connected to the clamping portion; the push-pull portion is slidably connected to the fixing portion;

[0023] Wherein, the push-pull portion moves vertically along the fixing portion, driving the clamping portion to clamp the connecting portion and move the positioning assembly out of the first groove, and after being moved out, the surrounding portion contracts to tightly hold the longitudinal arm.

[0024] Furthermore, the clamping portion includes a first clamping hand and a second clamping hand that are symmetrically arranged on the left and right, and there is a gap between the first clamping hand and the second clamping hand, and the gap is used to accommodate the connecting portion.

[0025] Furthermore, the fixing portion is provided with a second groove, the clamping portion is provided in the second groove, and can move vertically along the second groove driven by the push-pull portion.

[0026] Furthermore, a first abutting member is provided on the outer side of the clamping portion, and a first limiting portion is provided on the inner side wall of the second groove;

[0027] Wherein, the first abutting member and the first limiting portion are located on the same side of the clamping portion;

[0028] When the clamping portion moves vertically along the second groove and drives the first abutting member to closely abut against the first limiting portion, the first clamping hand and the second clamping hand approach each other to clamp the connecting portion.

[0029] Furthermore, after the clamping portion clamps the connecting portion, the embedded portion extends out of the top end of the clamping portion and extends upward.

[0030] A method for using a device for pushing a Mirena ring assembly, the specific steps are as follows:

[0031] Insert the Mirena ring into the inner sleeve of the device, with the support arms of the Mirena ring in a curled-up state;

[0032] The positioning component is electrostatically adsorbed in the first groove of the outer sleeve;

[0033] Insert the inner sleeve into the outer sleeve, adjust the position of the inner sleeve relative to the outer sleeve, and push the Mirena ring to the vicinity of the uterine fallopian tube through the external pushing device. When the support arms of the Mirena ring are free from the constraints of the inner sleeve, the support arms automatically unfold and support the entrances of the bilateral fallopian tubes.

[0034] Pull out the inner sleeve;

[0035] Sliding the push-pull part downward along the height direction of the fixing part drives the first clamping hand and the second clamping hand of the clamping part to move toward each other, thereby clamping the connecting part of the positioning assembly;

[0036] The push-pull part is operated in the reverse direction to slide upward. When the clamping part moves along the second groove to the end of the stroke, the surrounding part carried by it just breaks away from the restraint of the first groove; as the electrostatic adsorption effect is released, the surrounding part shrinks and hugs the longitudinal arm, and the embedding part simultaneously completes the implantation into the inner wall of the uterus;

[0037] Remove the entire device.

[0038] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0039] (1) The present invention enhances the long-term use stability and reliability of the Mirena coil: During long-term use, the uterus will undergo peristalsis due to physiological periods, daily activities, etc. The traditional Mirena coil is prone to displacement and detachment under its influence. After the combination of the Mirena coil and the positioning component, the double fixation mechanism of the surrounding part shrinking and clamping the longitudinal arm and the embedding part implanting into the uterine inner wall can effectively resist the external force interference caused by uterine peristalsis, ensuring that the Mirena coil always maintains an accurate position in the uterine cavity. Only when the Mirena coil is not easily detached can it slowly release levonorgestrel to achieve the ideal effect.

[0040] (2) The present invention promotes personalized medical adaptation: There are differences in the uterine physiological characteristics of different patients, including the size, shape, and endometrial thickness of the uterine cavity. This combination can achieve a customized fixation plan according to the individual situation of the patient by adjusting the embedding depth of the positioning component, the contraction degree of the surrounding part, etc. For example, for patients with a slightly larger uterine cavity, the implantation depth of the embedding part can be appropriately increased.

[0041] (3) The operation process of the present invention is simplified, which means that the surgical pain endured by the patient is reduced, and the postoperative recovery time may also be correspondingly shortened, improving the patient's treatment experience; on the other hand, compared with the traditional placement method that may require multiple attempts or complex auxiliary means such as hysteroscopic suture, the design of the positioning component reduces the surgical complexity, thereby reducing the use of surgical-related consumables and the cost of additional medical operations, and alleviating the economic burden on the patient. Description of the Drawings

[0042] Figure 1 Schematic diagram of the overall structure of the device in an embodiment of the present application;

[0043] Figure 2 Schematic diagram of the structure of the clamping part in an embodiment of the present application;

[0044] Figure 3 Schematic diagram of the relative position relationship between the fixing part and the propulsion component in an embodiment of the present application;

[0045] Figure 4 Schematic diagram of the cross-sectional structure of the propulsion component in an embodiment of the present application;

[0046] Figure 5 Schematic diagram of the surrounding part located in the first groove and wound in a ring shape in an embodiment of the present application;

[0047] Figure 6 Schematic diagram of the relative position relationship between the Mirena coil and the positioning component in an embodiment of the present application;

[0048] Figure 7 Schematic diagram of the structure of the first gripper and the second gripper in an embodiment of the present application;

[0049] Figure 8 Schematic diagram of the contracted state of the surrounding part in an embodiment of the present application;

[0050] Figure 9 Schematic diagram of the barbed structure in an embodiment of the present application.

[0051] Explanation of the reference numerals in the schematic diagram:

[0052] Mirena coil 1; longitudinal arm 11; support arm 12;

[0053] Positioning component 2; surrounding part 21; embedding part 22, barbed wire 221; connecting part 23;

[0054] Inner sleeve 3;

[0055] Outer sleeve 4; first groove 41;

[0056] Fixing part 5; second groove 51, first limiting part 511, second limiting part 512;

[0057] Advancing component 6; clamping part 61, first clamp 611, second clamp 612, first pressing part 613, second pressing part 614; pushing and pulling part 62, pressing part 621. Detailed implementation manners

[0058] To further understand the content of the present invention, the present invention will be described in detail in combination with the accompanying drawings and embodiments.

[0059] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" used in this specification are only for the convenience of clear narration and are not used to limit the scope that can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope that the present invention can be implemented.

[0060] The Mirena coil is a T-shaped bracket composed of a longitudinal arm and a support arm. A levonorgestrel storage is provided on the longitudinal arm, and there is a special controlled-release membrane outside the storage, which can make levonorgestrel slowly release at a constant speed. The transverse arm has some fine structures, which help it to be fixed in the uterine cavity.

[0061] By releasing a certain amount (about 20 μg) of levonorgestrel into the uterine cavity every day, the endometrium is in a high progesterone state, which is widely used in the treatment of dysfunctional uterine bleeding. For example, for patients with ovulatory disorder abnormal uterine bleeding, the use of the levonorgestrel intrauterine release system can effectively reduce menstrual volume, inhibit endometrial growth, and improve the condition of uterine bleeding.

[0062] For symptoms such as dysmenorrhea and chronic pelvic pain caused by endometriosis, the drugs in Mirena can continuously act on the endometrium and ectopic endometrium, causing the endometrium to atrophy, thereby reducing pain symptoms.

[0063] Patients with adenomyosis often experience progressively worsening dysmenorrhea and increased menstrual volume. Mirena makes the endometrium in a high progesterone state, and progesterone can inhibit the activity of adenomyosis lesions, playing a role in relieving dysmenorrhea and reducing menstrual volume, providing a relatively conservative treatment option for patients.

[0064] Generally, the suitable placement condition for Mirena is that the length of the uterine cavity does not exceed 10 cm. Once this standard is exceeded, the risk of Mirena falling off will increase significantly. Clinically, even after multiple courses of GnRHa (gonadotropin - releasing hormone agonist) treatment, the uterine volume of some patients with severe adenomyosis is still difficult to effectively shrink, unable to meet the placement requirements of Mirena.

[0065] To solve this problem, currently in clinical practice, the method of suturing and fixing Mirena in the uterine cavity under hysteroscopy is mostly used. When the service life is reached or it needs to be removed in advance, the suture needs to be removed again through hysteroscopic surgery. However, this method not only has high requirements for surgical operation techniques, but also significantly increases the surgical pain and economic burden of patients, and an optimized solution is urgently needed.

[0066] Example 1

[0067] The Mirena component involved in this application includes Mirena 1 and a positioning component 2. Among them, the design of the positioning component 2 is to firmly fix Mirena 1 on the uterine inner wall, solving the problem of easy detachment in traditional placement. When the preset service life is reached, or when it needs to be removed in advance due to special circumstances, only by removing the positioning component 2 from the uterus can the removal operation of Mirena 1 be successfully completed, simplifying the process and reducing the surgical complexity.

[0068] The Mirena intrauterine device 1 includes a longitudinal arm 11 and a pair of support arms 12 located at the top of the longitudinal arm 11. The support arms 12 are used to support at the entrance of the fallopian tubes on both sides. The positioning assembly 2 includes a surrounding portion 21 and an embedding portion 22, and the surrounding portion 21 and the embedding portion 22 are connected by a connecting portion 23. Among them, the surrounding portion 21 surrounds the longitudinal arm 11, and the embedding portion 22 is used to embed into the uterine inner wall. The positioning assembly 2 is preferably made of polypropylene thread.

[0069] More specifically, the embedding portion 22 extends upward in a direction substantially perpendicular to the plane where the surrounding portion 21 is located. The surrounding portion 21 has two forms. When the surrounding portion 21 is in the first form, it is in a circular winding shape; when the surrounding portion 21 is in the second form, it is in a contracted shape, and at this time the surrounding portion 21 tightly holds the longitudinal arm 11. It is worth noting that the surrounding portion 21 forms an irregular geometric contour after contraction. This design effectively enhances the friction coefficient between the two by significantly expanding the contact surface area with the longitudinal arm 11, realizing a firm hold on the longitudinal arm 11.

[0070] A number of barbed wires 221 are evenly distributed in the circumferential direction of the embedding portion 22. The structural height of the embedding portion 22 with barbed wires 221 is controlled between 5 mm and 10 mm, which makes the depth of the embedding portion 22 embedded in the endometrium exactly maintained between 5 mm and 10 mm, so as to avoid unnecessary damage to the uterus while ensuring the fixing effect.

[0071] The extending direction of the barbed wires 221 is arranged to incline downward at a specific angle with the axis of the embedding portion 22. Preferably, the angle range between the barbed wires 221 and the axis of the embedding portion 22 is 20° to 50°. The downward inclination and within the set angle range not only ensure that the barbed wires 221 can smoothly and accurately embed into the uterine inner wall tissue, but also form a firm grasping force with the unique inclination angle after embedding, effectively preventing the risk of displacement caused by physiological activities such as uterine peristalsis, and significantly improving the fixing stability of the Mirena intrauterine device assembly in the uterine cavity.

[0072] Embodiment 2

[0073] This Embodiment 2 is a device for pushing the Mirena intrauterine device assembly developed on the basis of Embodiment 1. This device is used to push the Mirena intrauterine device assembly into the uterus and fix it.

[0074] The device includes an inner sleeve 3, an outer sleeve 4, a fixing part 5 and a propulsion assembly 6. The fixing part 5 is connected to the outer sleeve 4; the inner sleeve 3 is hollow and is used to accommodate the Mirena ring 1. The hollow design provides a channel for pushing the Mirena ring 1. The outer sleeve 4 is also hollow and is sleeved on the inner sleeve 3. It is worth noting that there is no need for any connection structure between the inner sleeve 3 and the outer sleeve 4, which enables the inner sleeve 3 to achieve free vertical sliding in the hollow channel of the outer sleeve 4, and can also be completely separated and pulled out from the outer sleeve 4, thereby providing convenience for the placement and flexible operation of the Mirena ring 1.

[0075] The upper section of the outer sleeve 4 is provided with a first groove 41 for accommodating the positioning component 2 . The positioning component 2 is placed on the base of the first groove 41 and is electrostatically adsorbed on the side wall of the first groove 41 in a ring-shaped winding manner.

[0076] The propulsion assembly 6 includes a clamping portion 61 and a push-pull portion 62 connected to the clamping portion 61, and the clamping portion 61 is preferably integrally formed. The push-pull portion 62 is slidably connected to the fixing portion 5. When the push-pull portion 62 moves vertically along the height direction of the fixing portion 5, it can drive the clamping portion 61 to clamp the connecting portion 23 of the positioning assembly 2 and move the positioning assembly 2 out of the first groove 41. It is worth noting that once the positioning assembly 2 is separated from the groove 41, its electrostatic adsorption effect disappears immediately. At this time, the surrounding portion 21 will quickly and automatically shrink and tightly hold the longitudinal arm 11 of the Mirena ring 1, thereby achieving a reliable fixing effect.

[0077] More specifically, a second groove 51 is provided on a side of the fixing portion 5 opposite to the outer sleeve 4 , and the clamping portion 61 is provided in the second groove 51 , and a gap is provided in the middle of the clamping portion 61 . The clamping portion 61 can move vertically along the second groove 51 driven by the push-pull portion 62 .

[0078] The clamping portion 61 includes a first clamping hand 611 and a second clamping hand 612 which are symmetrically arranged on the left and right sides. There is a gap between the first clamping hand 611 and the second clamping hand 612 , and the gap is used to accommodate the connecting portion 23 .

[0079] A first abutting member 613 is provided on a side of the first clamping hand 611 relatively far from the second clamping hand 612, and correspondingly, a first limiting portion 511 is provided on the inner side wall of the second groove 51. It is worth noting that the first abutting member 613 and the first limiting portion 511 are located on the same side of the first clamping hand 611. When the clamping portion 61 moves vertically along the second groove, the first abutting member 613 is driven to approach or move away from the first limiting portion 511.

[0080] In order to better achieve the clamping effect, a second clamping piece 614 is provided on the side of the second clamping hand 612 relatively away from the first clamping hand 611. Correspondingly, a second limiting portion 512 is provided on the inner wall of the other side of the second groove 51. The second clamping piece 614 and the second limiting portion 512 are located on the other side of the second clamping hand 612. Preferably, the first clamping piece 613 and the second clamping piece 614 are symmetrical on the left and right, and the first limiting portion 511 and the second limiting portion 512 are symmetrical on the left and right.

[0081] Once the first abutting member 613 is in close contact with the first limiting portion 511 and the second abutting member 614 is in close contact with the second limiting portion 512, the first clamping hand 611 and the second clamping hand 612 can be driven to move toward each other, and the connection portion 23 can be stably clamped by precisely adjusting the gap therebetween, thereby ensuring the accuracy and reliability of the operation. When the abutting members are in close contact, the first clamping hand 611 and the second clamping hand 612 just move to the two sides of the connection member 23.

[0082] More specifically, the fixing member 5 is provided with a slide rail for the push-pull portion 62 to slide along, and the upper end of the slide rail is closed. When the push-pull portion 62 slides to the top along the slide rail, it will be limited by the obstruction of the closed end, thereby driving the clamping portion 61 to move synchronously to the limit position. At this time, the top of the clamping portion 61 is substantially flush with the top of the fixing portion 5, and the embedding portion 22 can smoothly extend out of the top of the fixing portion 5 and embed into the inner wall of the uterus, ensuring that the Mirena ring assembly reaches an ideal fixed state.

[0083] It should be noted that when the clamping portion 61 synchronously moves to the extreme position, the surrounding portion 21 just breaks away from the restraint of the first groove 41; as the electrostatic adsorption effect is released, the surrounding portion 21 shrinks rapidly and fits tightly to the longitudinal arm 11 in an adaptive embracing manner.

[0084] In addition, during the movement of the positioning component 2, it always maintains a coaxial motion state with the Mirena ring 1. This coaxial motion design ensures that the surrounding part 21 is always accurately and correctly placed on the longitudinal arm 11 during the entire movement process, laying a stable and reliable foundation for the subsequent operations such as the surrounding part 21 contracting and hugging the longitudinal arm 11 and the embedding part 22 being implanted into the inner wall of the uterus.

[0085] It is worth noting that when the clamping portion 61 moves upward along the second groove 51, as the distance between the first clamping member 613 and the first limiting portion 511 gradually increases, the gap between the first clamping hand 611 and the second clamping hand 612 will expand slightly, so that the clamping force is in a critical adaptation state: it ensures a stable and reliable grip on the connecting member 23 to meet the positioning requirements during the pushing process; it also avoids excessive mechanical stress due to over-tight clamping, so that after the embedding portion 22 is successfully implanted into the inner wall of the uterus, the device and the connecting member 23 can be safely separated smoothly, thereby improving the safety and convenience of clinical operations.

[0086] The push-pull part 62 is provided with an ergonomically designed pressing part 621, which is convenient for medical staff to naturally insert their fingers into it. By applying force, the up-and-down displacement of the push-pull part 62 is realized, so as to control the movement of the positioning component 2. In terms of the structural dimension design, the maximum lateral dimension of the whole device is strictly controlled within 3 cm, effectively meeting the portability and minimally invasive requirements of clinical operations, ensuring that it can adapt to various intrauterine operation scenarios, and at the same time reducing the risk of tissue damage during the insertion process.

[0087] The using steps of the device are as follows:

[0088] Place the Mirena IUD 1 into the inner sleeve 3, and at this time, the support arm 12 is in a curled state;

[0089] The positioning component 2 is electrostatically adsorbed in the first groove 41 of the outer sleeve 4;

[0090] Insert the inner sleeve 3 into the outer sleeve 4, and adjust the position of the inner sleeve 3 relative to the outer sleeve 4. Push the Mirena IUD 1 to the vicinity of the uterine fallopian tube through an external pushing device. When the support arm 12 of the Mirena IUD 1 is released from the restraint of the inner sleeve 3, it automatically unfolds by virtue of its own elastic deformation and supports at the bilateral fallopian tube entrances to complete the positioning;

[0091] Withdraw the inner sleeve 3;

[0092] First, slide the push-pull part 62 downward along the slide rail, and the abutting parts are closely abutted against each other, driving the first clamp 611 and the second clamp 612 of the clamping part 61 to move towards each other, so as to form a stable clamp on the connecting part 23; then, reversely control the push-pull part 62 to slide upward. When the clamping part 61 runs to the end of the stroke along the second groove 51, the surrounding part 21 carried by it just breaks away from the restraint of the first groove 41; with the release of the electrostatic adsorption effect, the surrounding part 21 quickly contracts and tightly fits the longitudinal arm 11 in an adaptive encircling manner; at the same time, the embedding part 22 synchronously completes the implantation of the uterine inner wall, realizing the cooperative fixation of the positioning component 2 and the Mirena IUD 1, and ensuring the stable placement of the device in the uterine cavity;

[0093] After pausing for a period of time, remove the whole device.

[0094] The above schematically describes the present invention and its implementation manners. This description is not restrictive, and what is shown in the drawings is only one of the implementation manners of the present invention. The actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the spirit of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A Mirena coil assembly, comprising a Mirena coil (1), the Mirena coil (1) including a longitudinal arm (11) and a pair of support arms (12) located at the top of the longitudinal arm (11); characterized in that: It further includes, a positioning component (2), which includes a surrounding portion (21) and an embedding portion (22), and the surrounding portion (21) and the embedding portion (22) are connected by a connecting portion (23); wherein, the embedding portion (22) extends upward in a direction substantially perpendicular to the plane where the surrounding portion (21) is located; the surrounding portion (21) is used to surround the longitudinal arm (11), and the embedding portion (22) is used to embed into the uterine inner wall.

2. The Mirena ring assembly according to claim 1, characterized in that: the surrounding portion (21) has two forms; when the surrounding portion (21) is in the first form, the surrounding portion (21) is in a circular winding shape; when the surrounding portion (21) is in the second form, the surrounding portion (21) is in a contracted shape for tightly holding the longitudinal arm (11).

3. The Mirena coil assembly according to claim 1, characterized in that: The surrounding portion (21) is in an irregular shape after contraction.

4. A Mirena coil assembly according to claim 1, characterized in that: A plurality of barbed wires (221) are uniformly distributed along the circumferential direction of the embedding portion (22), and the extending direction of the barbed wires (221) is inclined downward at a specific angle with the axis of the embedding portion (22).

5. A Mirena coil assembly according to claim 4, characterized in that: The angle range between the barbed wire (221) and the axis of the embedding portion (22) is 20° to 50°.

6. A device for pushing a Mirena ring assembly, characterized in that: The device is used to push the Mirena ring assembly according to any one of claims 1 to 5 into the uterus; the device includes, an inner sleeve (3), which is hollow, and the inner sleeve (3) is used to accommodate the Mirena ring (1) and provide a channel for pushing the Mirena ring (1); an outer sleeve (4), which is sleeved on the inner sleeve (3), and a first groove (41) for accommodating the positioning component (2) is provided on the upper section of the outer sleeve (4), and the positioning component (2) is electrostatically adsorbed in a circular winding shape in the first groove (41); a fixing portion (5), which is connected to the outer sleeve (4); a propulsion component (6), which includes a clamping portion (61) with a gap in the middle and a pushing and pulling portion (62) connected to the clamping portion (61); the pushing and pulling portion (62) is slidably connected to the fixing portion (5); wherein, the pushing and pulling portion (62) moves vertically along the fixing portion (5), drives the clamping portion (61) to clamp the connecting portion (23) and moves the positioning component (2) out of the first groove (41), and after being moved out, the surrounding portion (21) contracts to tightly hold the longitudinal arm (11).

7. A device for pushing a Mirena coil assembly according to claim 6, characterized in that: The clamping portion (61) includes a first clamping hand (611) and a second clamping hand (612) which are symmetrically arranged on the left and right, and there is a gap between the first clamping hand (611) and the second clamping hand (612), and the gap is used to accommodate the connecting portion (23).

8. The device for pushing a Mirena ring assembly according to claim 6, characterized in that: The fixing portion (5) is provided with a second groove (51), and the clamping portion (61) is arranged in the second groove (51) and can move vertically along the second groove (51) driven by the pushing and pulling portion (62).

9. A device for pushing a Mirena ring assembly according to claim 7, characterized in that: A first pressing member (613) is provided on the side of the first clamping hand (611) relatively far from the second clamping hand (612), and a first limiting portion (511) is provided on the inner side wall of the second groove (51); wherein, the first pressing member (613) and the first limiting portion (511) are on the same side of the first clamping hand (611); When the clamping portion (61) moves vertically along the second groove (51) and drives the first abutting member (613) to closely abut against the first limiting portion (511), the first clamping hand (611) and the second clamping hand (612) approach each other to clamp the connecting portion (23).

10. A device for pushing a Mirena ring assembly according to claim 9, characterized in that: After the clamping portion (61) clamps the connecting portion (23), the embedded portion (22) extends out of the top of the clamping portion (61) and extends upward.

11. A method for using a device for pushing a Mirena ring assembly, characterized in that, The Mirena ring assembly and the pushing device thereof according to any one of claims 1 to 10 are included, and the specific operation steps are as follows: Insert the Mirena ring into the inner sleeve of the device, with the support arms of the Mirena ring in a curled-up state; The positioning component is electrostatically adsorbed in the first groove of the outer sleeve; Insert the inner sleeve into the outer sleeve, adjust the position of the inner sleeve relative to the outer sleeve, and push the Mirena ring to the vicinity of the uterine fallopian tube through the external pushing device. When the support arms of the Mirena ring are free from the constraints of the inner sleeve, the support arms automatically unfold and support the entrances of the bilateral fallopian tubes. Pull out the inner sleeve; Sliding the push-pull part downward along the height direction of the fixing part drives the first clamping hand and the second clamping hand of the clamping part to move toward each other, thereby clamping the connecting part of the positioning assembly; The push-pull part is operated in the reverse direction to slide upward. When the clamping part moves along the second groove to the end of the stroke, the surrounding part carried by it just breaks away from the restraint of the first groove; as the electrostatic adsorption effect is released, the surrounding part shrinks and hugs the longitudinal arm, and the embedding part simultaneously completes the implantation into the inner wall of the uterus; Remove the entire device.

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