Intrauterine ring removing device

Abstract

The intrauterine ring removing device comprises a supporting rod and a rotating rod, one end of the rotating rod is hinged to one end of the supporting rod, the plane of the rotating track is parallel to the axis of the supporting rod, and a hook head is fixedly connected to the side wall of the end, opposite to the supporting rod, of the rotating rod. A first adjusting part for driving the rotating rod to rotate is arranged between the rotating rod and the supporting rod; a protective sleeve used for wrapping the rotating rod is arranged on the supporting rod, the protective sleeve and the supporting rod are coaxial and are in sliding connection in the axial direction of the supporting rod, and a second adjusting part used for driving the protective sleeve to slide is arranged between the protective sleeve and the supporting rod. The problems that in the prior art, most intrauterine ring taking hooks are of long and thin rod-shaped fixing structures, the angle of a hook head is difficult to adjust in the uterine cavity of a patient, the intrauterine ring taking hooks need to swing greatly to adjust the angle of the intrauterine ring taking hooks so as to hook an intrauterine ring, and the patient feels uncomfortable are solved. And when the exposed hook head moves towards the outside of the uterine cavity, the risk of hooking the endometrial tissue of the uterine cavity exists.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to an intrauterine ring removal device. Background Art

[0002] The IUD is a contraceptive device placed in the uterine cavity. Since the devices used in the early stage are mostly ring-shaped, they are usually called IUDs, also known as intrauterine contraceptive devices, or IUDs for short. When the IUD expires, it needs to be removed to reduce the risk of contraceptive failure.

[0003] In the prior art, the ring removal hook is a commonly used device for removing the IUD. When in use, the hook head of the ring removal hook is inserted into the uterine cavity, the IUD is hooked with the hook head, and then the ring removal hook is pulled out of the uterine cavity to remove the IUD from the patient's uterine cavity. Since the IUD is in the patient's body for a long time, the IUD may become stuck or displaced. However, most of the ring removal hooks are slender rod-shaped fixed structures, which make it difficult to adjust the hook head angle in the patient's uterine cavity. The ring removal hook needs to swing more significantly as a whole to adjust the hook head angle to hook the IUD, which makes the patient feel uncomfortable, and there is a risk that the exposed hook head will hook the endometrial tissue in the uterine cavity when it moves out of the uterine cavity. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide an intrauterine ring remover to solve the problem that the ring removal hook in the prior art is mostly a slender rod-shaped fixed structure, which makes it difficult to adjust the angle of the hook head in the patient's uterine cavity, and requires the ring removal hook to swing relatively sharply as a whole to adjust the angle of the ring removal hook to hook the contraceptive ring, which makes the patient feel uncomfortable, and there is a risk of the exposed hook head hooking the endometrial tissue when moving outside the uterine cavity.

[0005] The present invention is achieved through the following technical solutions:

[0006] An intrauterine ring removal device comprises a support rod and a rotating rod, wherein one end of the rotating rod is hinged to the other end of the support rod, and the plane of the rotating track is parallel to the axis of the support rod, a hook is fixedly connected to the side wall of the rotating rod facing away from the end of the support rod, and a first adjusting part for driving the rotating rod to rotate is arranged between the rotating rod and the support rod;

[0007] The support rod is provided with a protective sleeve for wrapping the rotating rod. The protective sleeve is coaxial with the support rod and is slidably connected along the axial direction of the support rod. A second adjusting part for driving the protective sleeve to slide is provided between the protective sleeve and the support rod.

[0008] Furthermore, the support rod is a hollow structure with one end open, and a hinge seat is fixedly connected to the middle of the end surface of the closed end of the support rod;

[0009] The hinge seat is rotatably matched with a rotating sleeve, and the end of the rotating rod facing away from the hook head is detachably connected to the outer circumferential surface of the rotating sleeve.

[0010] Furthermore, the protective sleeve is sleeved outside the hinge seat, and one end of the protective sleeve passes through the end wall of the closed end of the support rod and is inserted into the support rod to slide and fit.

[0011] Furthermore, the side wall of the protective sleeve is provided with a strip-shaped notch extending axially toward and through the protective sleeve, and the rotating rod can be rotated and extended from the strip-shaped notch.

[0012] Furthermore, a clamping plate is fixedly connected to a side wall of the rotating rod facing away from the hook head on one end of the rotating rod facing away from the support rod, and the rotating rod is in a rectangular block shape facing the end of the supporting rod;

[0013] A rectangular hole is formed on the outer circumferential surface of the rotating sleeve, and one end of the rotating rod facing the supporting rod is tightly fitted and inserted into the rectangular hole.

[0014] Furthermore, the first adjusting part includes a slider embedded in the support rod, a gear coaxially fixedly connected to the rotating sleeve, and a rack meshing with the gear, and the slider is embedded in the protective sleeve and slides in a single degree of freedom along the axial direction of the protective sleeve;

[0015] One end of the rack passes through the end wall of the closed end of the support rod and is inserted into the support rod, and is fixedly connected to the slider;

[0016] The end of the slider facing away from the rack is provided with a first telescopic rod, one end of the first telescopic rod is fixedly connected to the slider, and the other end of the first telescopic rod extends toward the open end of the support rod and is connected to the support rod.

[0017] Furthermore, the first telescopic rod includes a push rod and a first operating tube, one end of the push rod is fixedly connected to the slider, and the other end is inserted into the first operating tube and connected by threaded fitting;

[0018] One end of the first operating tube facing away from the push rod protrudes out of the opening of the support rod, and the first operating tube is rotatably connected to the support rod.

[0019] Furthermore, the second adjusting portion includes a second telescopic rod embedded in the support rod, one end of the second telescopic rod is fixedly connected to the protective sleeve, and the other end extends toward the open end of the support rod and is connected to the support rod.

[0020] Furthermore, the second telescopic rod includes a push tube sleeved outside the push rod and a second control tube sleeved outside the first control tube, one end of the push tube is fixedly connected to the protective sleeve, and the other end is inserted into the second control tube and connected by threaded fitting, and the outer diameter of the first control tube is smaller than the inner diameter of the push tube;

[0021] The second operating tube extends to the outside of the opening of the support rod with one end facing away from the push tube, and the second operating tube is rotatably connected to the support rod.

[0022] Furthermore, a plurality of parallel connecting strips are arranged outside the open end of the support rod, and the plurality of connecting strips are evenly arranged around the circumference of the support rod;

[0023] One end of the connecting strip is fixedly connected to the open end of the support rod, and the other end extends along the axial direction of the support rod toward the direction away from the support rod, and the first control tube and the second control tube are both rotatably matched with the multiple connecting strips around the axis of the support rod.

[0024] The beneficial effects of the present invention are:

[0025] The intrauterine ring remover comprises a ring removal hook structure composed of a support rod and a rotating rod, and the rotating rod is rotatably connected to the support rod, so that the rotating rod can drive the hook head to rotate on the support rod, that is, after the rotating rod and the hook head are extended into the uterine cavity, the rotating rod can be driven to rotate on the support rod through the first adjustment part to change the angle of the hook head so that the hook head can hook the contraceptive ring; the purpose of hooking the contraceptive ring can be achieved without swinging the support rod to a large extent, thereby reducing the discomfort of the patient.

[0026] After the hook head hooks the contraceptive ring, the first adjustment part can be used to drive the rotating rod to rotate back to the initial position, so that the ring remover is in a straight and long strip shape, reducing the risk of the hook head hooking the endometrial tissue, so that the ring remover can be smoothly removed from the uterine cavity; at the same time, the second adjustment part can be used to drive the protective sleeve to slide on the support rod, so that the protective sleeve protrudes out of the end of the support rod and wraps the rotating rod and the hook head, so that the protective sleeve serves as a barrier between the hook head and the endometrial tissue, further reducing the risk of the hook head hooking the endometrial tissue.

[0027] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0029] Figure 2 An exploded view of an embodiment of the present invention;

[0030] Figure 3 It is a schematic diagram of the planar structure of an embodiment of the present invention;

[0031] Figure 4 is a schematic diagram of the three-dimensional structure of the rotating rod in an embodiment of the present invention;

[0032] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating sleeve in an embodiment of the present invention;

[0033] Figure 6 Schematic diagram of the three-dimensional structure of the protective sleeve in an embodiment of the present invention;

[0034] Figure 7 It is a schematic diagram of the three-dimensional structure of the first adjusting part in an embodiment of the present invention;

[0035] Figure 8 Schematic diagram of the three-dimensional structure of the second adjusting part in an embodiment of the present invention;

[0036] Fig. 9 for Figure 3 Sectional view of AA in the middle;

[0037] Fig.10 for Fig. 9 The enlarged view of point B in the middle;

[0038] Fig.11 for Fig. 9 Enlarged view of point C in the middle;

[0039] Fig.12 for Fig. 9 Enlarged view of point D in the middle.

[0040] In the figure: 1, support rod; 11, hinge seat; 12, rotating sleeve; 121, rectangular hole; 2, rotating rod; 21, hook; 22, splint; 3, protective sleeve; 31, strip notch; 41, slider; 42, gear; 43, rack; 51, push rod; 52, first control tube; 61, push tube; 62, second control tube; 7, connecting strip; 8, contraceptive ring. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0044] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0045] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0046] See also Figure 1-12 The present invention provides a technical solution: an intrauterine ring removal device, comprising a support rod 1 and a rotating rod 2, one end of the rotating rod 2 is hinged to one end of the support rod 1, and the plane of the rotating track is parallel to the axis of the support rod 1, the side wall of the rotating rod 2 facing away from the support rod 1 is fixedly connected with a hook head 21, and a first adjustment part for driving the rotating rod 2 to rotate is arranged between the rotating rod 2 and the support rod 1;

[0047] The support rod 1 is provided with a protective sleeve 3 for wrapping the rotating rod 2. The protective sleeve 3 is coaxial with the support rod 1 and is axially slidably connected to the support rod 1. A second adjustment part for driving the protective sleeve 3 to slide is provided between the protective sleeve 3 and the support rod 1.

[0048] The IUD removal hook structure is composed of the support rod 1 and the rotating rod 2, and the rotating rod 2 is rotatably connected to the support rod 1, so that the rotating rod 2 can drive the hook head 21 to rotate on the support rod 1, that is, after the rotating rod 2 and the hook head 21 are extended into the uterine cavity, the rotating rod 2 can be driven to rotate on the support rod 1 through the first adjustment part to change the angle of the hook head 21 so that the hook head 21 can hook the contraceptive ring 8; the purpose of hooking the contraceptive ring 8 can be achieved without swinging the support rod 1 significantly, thereby reducing the patient's discomfort.

[0049] After the hook head 21 hooks the contraceptive ring 8, the first adjustment part can be used to drive the rotating rod 2 to rotate back to the initial position, so that the ring remover is in a straight and long strip shape, reducing the risk of the hook head 21 hooking the endometrial tissue, so that the ring remover can be smoothly removed from the uterine cavity; at the same time, the second adjustment part can be used to drive the protective sleeve 3 to slide on the support rod 1, so that the protective sleeve 3 protrudes out of the end of the support rod 1 and wraps the rotating rod 2 and the hook head 21, so that the protective sleeve 3 serves as a barrier between the hook head 21 and the endometrial tissue, further reducing the risk of the hook head 21 hooking the endometrial tissue.

[0050] In this embodiment: the support rod 1 is a hollow structure with one end open, and a hinge seat 11 is fixedly connected to the middle of the end surface of the closed end of the support rod 1;

[0051] The hinge seat 11 is rotatably matched with a rotating sleeve 12 , and the end of the rotating rod 2 facing away from the hook head 21 is detachably connected to the outer circumferential surface of the rotating sleeve 12 .

[0052] By detachably connecting the rotating rod 2 with the rotating sleeve 12, the rotating rod 2 can be removed from the ring remover, so that multiple rotating rods 2 can be made, and hook heads 21 of different sizes are set on the multiple rotating rods 2. When in use, the corresponding hook head 21 is selected according to the aperture of the hook hole on the contraceptive ring 8, and the rotating rod 2 corresponding to the hook head 21 is installed on the rotating sleeve 12 to facilitate the hooking of the contraceptive ring 8.

[0053] In this embodiment: the protection sleeve 3 is sleeved outside the hinge seat 11, and one end of the protection sleeve 3 penetrates the end wall of the closed end of the support rod 1 and is inserted into the support rod 1 to slide and fit.

[0054] By slidingly connecting the protective sleeve 3 with the support rod 1, the protective sleeve 3 can be slidably embedded in the support rod 1, exposing the rotating rod 2, eliminating the obstruction of the hook head 21 on the rotating rod 2, so that the hook head 21 can hook the contraceptive ring 8; after the hook head 21 hooks the contraceptive ring 8, the protective sleeve 3 can be driven to slide out from the support rod 1 through the second adjustment part to cover the rotating rod 2 and the hook head 21. After the protective sleeve 3 completely covers the hook head 21, the protective sleeve 3 can continue to be driven to slide toward the outside of the support rod 1 to further receive the hook head 21 into the protective sleeve 3, that is, the hook head 21 drives the contraceptive ring 8 to be embedded in the protective sleeve 3, reducing the activity space around the hook head 21, so as to limit the contraceptive ring 8 from sliding off the hook head 21, so that the contraceptive ring 8 can be smoothly moved out of the uterine cavity with the ring remover.

[0055] In this embodiment, a strip-shaped notch 31 extending axially toward and through the protective sleeve 3 is formed on the side wall of the protective sleeve 3 , and the rotating rod 2 can be rotated and extended from the strip-shaped notch 31 .

[0056] By providing a strip-shaped notch 31 on the side wall of the protective sleeve 3, the rotating rod 2 can be rotated and extended from the strip-shaped notch 31 when the protective sleeve 3 is not slid into the support rod 1. That is, when the protective sleeve 3 does not affect the hook head 21 to hook the IUD 8, the protective sleeve 3 can be not slid into the support rod 1 or the protective sleeve 3 can be partially slid into the support rod 1, simplifying the removal steps of the IUD 8 and improving the efficiency of the removal of the IUD 8.

[0057] In this embodiment: a clamping plate 22 is fixedly connected to a side wall of the end of the rotating rod 2 facing away from the support rod 1 and facing away from the hook head 21, and the end of the rotating rod 2 facing the support rod 1 is in a rectangular block shape;

[0058] A rectangular hole 121 is formed on the outer circumferential surface of the rotating sleeve 12 , and one end of the rotating rod 2 facing the supporting rod 1 is tightly inserted into the rectangular hole 121 .

[0059] When the rotating rod 2 is tightly inserted into the rectangular hole 121, the hook head 21 and the clamp 22 are both on the plane of the rotating track of the rotating rod 2. During use, when there is no hook hole on the contraceptive ring 8 or the hook hole is blocked or damaged, move the clamp 22 to the side facing the protective sleeve 3, and insert the rotating rod 2 tightly into the rectangular hole 121, insert one end of the hook hole of the contraceptive ring 8 into the protective sleeve 3 from the protective sleeve 3 facing away from the opening at one end of the support rod 1, or drive the rotating rod 2 to rotate, so that the clamp 22 moves relative to the protective sleeve 3, and use the clamp 22 to push the contraceptive ring 8 into the protective sleeve 3 from the strip notch 31, until the clamp 22 and the inner wall of the protective sleeve 3 jointly squeeze the contraceptive ring 8, clamp the contraceptive ring 8, and finally remove the contraceptive ring 8 from the uterine cavity. The ring remover has the ability to hook and clamp the contraceptive ring 8, and is highly practical.

[0060] In this embodiment: the first adjusting part includes a slider 41 embedded in the support rod 1, a gear 42 coaxially fixedly connected to the rotating sleeve 12, and a rack 43 meshing with the gear 42, the slider 41 is embedded in the protective sleeve 3 and slides along the axial direction of the protective sleeve 3 with a single degree of freedom;

[0061] One end of the rack 43 penetrates through the end wall of the closed end of the support rod 1 and is inserted into the support rod 1, and is fixedly connected to the slider 41;

[0062] The slider 41 is provided with a first telescopic rod at one end facing away from the rack 43 . One end of the first telescopic rod is fixedly connected to the slider 41 , and the other end of the first telescopic rod extends toward the open end of the support rod 1 and is connected to the support rod 1 .

[0063] Through the transmission structure composed of the gear 42, the rack 43, the slider 41 and the first telescopic rod, when the first telescopic rod is extended or shortened, the slider 41 is driven to slide in the protective sleeve 3, and the power is transmitted to the rotating sleeve 12 through the transmission structure, so that the rotating sleeve 12 drives the rotating rod 2 to rotate together, so as to achieve the purpose of adjusting the angle of the hook head 21.

[0064] In this embodiment: the first telescopic rod includes a push rod 51 and a first operating tube 52, one end of the push rod 51 is fixedly connected to the slider 41, and the other end is inserted into the first operating tube 52 and connected by threaded fitting;

[0065] One end of the first operating tube 52 facing away from the push rod 51 protrudes out of the opening of the support rod 1 , and the first operating tube 52 is rotatably connected to the support rod 1 .

[0066] Through the first telescopic rod composed of the push rod 51 and the first operating tube 52, the first operating tube 52 is extended out of the opening of the support rod 1 at one end facing away from the push rod 51 and is rotatably connected to the support rod 1, so that the relevant medical staff can control the rotation of the first operating tube 52, and then control the rotation of the rotating rod 2, which is simple and convenient to operate. The push rod 51 and the first operating tube 52 are connected by threaded matching, so that when the first operating tube 52 is not subjected to a torsional force, the length of the first telescopic rod remains stable, that is, the angle between the rotating rod 2 and the protective sleeve 3 remains stable, so that the hook head 21 is controlled to hook the IUD 8, or the clamp 22 stably clamps the IUD 8.

[0067] In this embodiment: the second adjustment part includes a second telescopic rod embedded in the support rod 1, one end of the second telescopic rod is fixedly connected to the protective sleeve 3, and the other end extends toward the open end of the support rod 1 and is connected to the support rod 1.

[0068] In this embodiment: the second telescopic rod includes a push tube 61 sleeved outside the push rod 51 and a second operating tube 62 sleeved outside the first operating tube 52, one end of the push tube 61 is fixedly connected to the protection sleeve 3, and the other end is inserted into the second operating tube 62 and connected by threaded fitting, and the outer diameter of the first operating tube 52 is smaller than the inner diameter of the push tube 61;

[0069] One end of the second operating tube 62 facing away from the push tube 61 extends to the outside of the opening of the support rod 1 , and the second operating tube 62 is rotatably connected to the support rod 1 .

[0070] The second telescopic rod is integrally sleeved outside the first telescopic rod, and the outer diameter of the first operating tube 52 is smaller than the inner diameter of the push tube 61, so that there is a gap between the first operating tube 52 and the push tube 61 to eliminate the relative influence between the first telescopic rod and the second telescopic rod, so as to independently control the rotation of the rotating rod 2 and the sliding of the protective sleeve 3. The ends of the first telescopic rod and the second telescopic rod facing away from the rotating rod 2 are both concentrated outside the open end of the support rod 1, so as to facilitate the operation of relevant medical staff and provide convenience for the removal of the contraceptive ring 8.

[0071] In this embodiment: a plurality of parallel connecting strips 7 are arranged outside the open end of the support rod 1, and the plurality of connecting strips 7 are evenly arranged around the circumference of the support rod 1;

[0072] One end of the connecting strip 7 is fixedly connected to the open end of the support rod 1, and the other end extends along the axial direction of the support rod 1 toward the direction away from the support rod 1, and the first operating tube 52 and the second operating tube 62 are both rotatably matched with multiple connecting strips 7 around the axis of the support rod 1.

[0073] The plurality of connecting strips 7 are used to frame the ends of the first control tube 52 and the second control tube 62 facing away from the rotating rod 2, and support the first control tube 52 and the second control tube 62, so that the rotation of the first control tube 52 and the second control tube 62 is more stable. The end of the first control tube 52 facing away from the rotating rod 2 protrudes outside the opening of the second control tube 62, so that the first control tube 52 and the second control tube 62 are both exposed outside the supporting rod 1, and only need to pass through the gap between two adjacent connecting strips 7 to contact the outer circumferential surface of the first control tube 52 or the second control tube 62, so as to control the rotation of the first control tube or the second control tube.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An intrauterine device, characterized in that: The invention comprises a support rod (1) and a rotating rod (2), one end of the rotating rod (2) is hinged to one end of the support rod (1), and the plane of the rotating track is parallel to the axis of the support rod (1); a hook head (21) is fixedly connected to the side wall of one end of the rotating rod (2) facing away from the support rod (1); and a first adjusting part for driving the rotating rod (2) to rotate is provided between the rotating rod (2) and the support rod (1); The support rod (1) is provided with a protective sleeve (3) for wrapping the rotating rod (2); the protective sleeve (3) is coaxial with the support rod (1) and is slidably connected along the axial direction of the support rod (1); and a second adjustment portion for driving the protective sleeve (3) to slide is provided between the protective sleeve (3) and the support rod (1).

2. The intrauterine device according to claim 1, characterized in that: The support rod (1) is a hollow structure with one end open, and a hinge seat (11) is fixedly connected to the middle of the end surface of the closed end of the support rod (1); The hinge seat (11) is rotatably matched with a rotating sleeve (12), and one end of the rotating rod (2) facing away from the hook head (21) is detachably connected to the outer circumferential surface of the rotating sleeve (12).

3. The intrauterine device according to claim 2, characterized in that: The protective sleeve (3) is sleeved outside the hinge seat (11), and one end of the protective sleeve (3) penetrates the end wall of the closed end of the support rod (1) and is inserted into the support rod (1) to slide in cooperation.

4. The intrauterine device according to claim 3, characterized in that: The side wall of the protective sleeve (3) is provided with a strip-shaped notch (31) extending axially toward and penetrating the protective sleeve (3), and the rotating rod (2) can be rotated and extended from the strip-shaped notch (31).

5. The intrauterine device according to claim 4, characterized in that: A clamping plate (22) is fixedly connected to a side wall of the rotating rod (2) on one end facing away from the supporting rod (1) and facing away from the hook head (21); the rotating rod (2) is in a rectangular block shape on one end facing the supporting rod (1); The outer circumferential surface of the rotating sleeve (12) is provided with a rectangular hole (121), and one end of the rotating rod (2) facing the supporting rod (1) is tightly inserted into the rectangular hole (121).

6. The intrauterine device according to claim 4, characterized in that: The first adjusting portion comprises a slider (41) embedded in the support rod (1), a gear (42) coaxially fixedly connected to the rotating sleeve (12), and a rack (43) meshing with the gear (42); the slider (41) is embedded in the protective sleeve (3) and slides in a single degree of freedom along the axial direction of the protective sleeve (3); One end of the rack (43) penetrates the end wall of the closed end of the support rod (1), is inserted into the support rod (1), and is fixedly connected to the slider (41); A first telescopic rod is provided at one end of the slider (41) facing away from the rack (43); one end of the first telescopic rod is fixedly connected to the slider (41), and the other end of the first telescopic rod extends toward the open end of the support rod (1) and is connected to the support rod (1).

7. The intrauterine device according to claim 6, characterized in that: The first telescopic rod comprises a push rod (51) and a first operating tube (52); one end of the push rod (51) is fixedly connected to the slider (41), and the other end is inserted into the first operating tube (52) and connected by threaded fitting; One end of the first operating tube (52) facing away from the push rod (51) protrudes out of the opening of the support rod (1), and the first operating tube (52) is rotatably connected to the support rod (1).

8. The intrauterine device according to claim 7, characterized in that: The second adjustment portion comprises a second telescopic rod embedded in the support rod (1); one end of the second telescopic rod is fixedly connected to the protective sleeve (3), and the other end extends toward the open end of the support rod (1) and is connected to the support rod (1).

9. The intrauterine device according to claim 8, characterized in that: The second telescopic rod comprises a push tube (61) sleeved outside the push rod (51) and a second operating tube (62) sleeved outside the first operating tube (52), one end of the push tube (61) is fixedly connected to the protective sleeve (3), and the other end is inserted into the second operating tube (62) and connected by threaded fitting, and the outer diameter of the first operating tube (52) is smaller than the inner diameter of the push tube (61); One end of the second operating tube (62) facing away from the push tube (61) extends to the outside of the opening of the support rod (1), and the second operating tube (62) is rotatably connected to the support rod (1).

10. The intrauterine device according to claim 9, characterized in that: A plurality of parallel connecting strips (7) are arranged outside the open end of the support rod (1), and the plurality of connecting strips (7) are evenly arranged in a circumferential direction around the support rod (1); One end of the connecting strip (7) is fixedly connected to the open end of the support rod (1), and the other end extends along the axial direction of the support rod (1) in a direction away from the support rod (1), and the first operating tube (52) and the second operating tube (62) are both rotatably matched with the plurality of connecting strips (7) with the axis of the support rod (1) as the center.

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