A type of intrauterine stent

Abstract

This invention provides a uterine cavity stent, comprising a diaphragm for preventing adhesion of the uterine wall, a first support mechanism, and two sets of second support mechanisms. The second support mechanisms are capable of horizontal rotation around a first movable block. When the two sets of second support mechanisms are deployed in a V-shape with their openings facing away from the first support mechanism, the first support mechanism and the two sets of second support mechanisms form a Y-shape, and the two sets of second support mechanisms are respectively located within the uterine cavity of a bicornuate uterus, providing support for the bicornuate uterus. When one set of second support mechanisms is stationary and the other set of second support mechanisms is deployed at an acute angle to the first support mechanism, the first support mechanism and the two sets of second support mechanisms are located within the uterine cavity of a unicornuate uterus, providing support for the unicornuate uterine cavity. This invention solves the problem in existing technologies where balloon stents are difficult to achieve close fit and stable support with the uterine cavity wall of irregularly shaped uteri, resulting in poor compatibility after stent placement and reduced anti-adhesion effectiveness.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to an intrauterine stent. Background Technology

[0002] During hysteroscopic and other surgeries in clinical practice, the surgical procedures can damage the endometrium. If left untreated, this can lead to adhesions between the uterine walls, causing significant pain and related complications for the patient. The current solution is to insert a balloon filled with saline solution into the uterus to form a barrier. The balloon is then removed after the wound has scabbed over, thus preventing uterine adhesions.

[0003] Existing intrauterine stent products are mainly designed for uterine cavities with normal or near-normal shapes. Clinically, for patients with bicornuate or unicornuate uteri, the shape, size, and depth of their uterus differ from those of a normal uterus. Uterine aberrations mainly affect the patient's reproductive health and pregnancy outcomes. For patients who will not become pregnant after surgery, doctors will not reshape the uterus. Existing balloon stents are difficult to achieve a close fit and stable support to the uterine cavity wall of aberrant uteri. This leads to poor fit, uneven distribution of support force, and increased risk of postoperative displacement after stent placement, thus reducing the effectiveness of anti-adhesion. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide an intrauterine stent to solve the problem that existing balloon stents are difficult to achieve close fit and stable support with the inner wall of irregular uterine cavities, resulting in poor compatibility after stent placement and reduced anti-adhesion effect.

[0005] To achieve the above and other related objectives, the present invention provides an intrauterine stent, comprising a diaphragm for preventing adhesion of the uterine wall, a first support mechanism located within the diaphragm for supporting the diaphragm, the first support mechanism including a first fixing block, the diaphragm contacting the first fixing block, a first connecting rod fixedly connected to the first fixing block, a second fixing block slidably connected to the first connecting rod along its length, a first movable block slidably connected to the second fixing block along its length, and two sets of second support mechanisms for supporting the diaphragm, the second support mechanisms being hinged to the first movable blocks. The two support mechanisms can rotate horizontally around the first movable block. The second support mechanism includes a mating block, and a first hinge seat is fixedly connected to the first movable block. The mating block is hinged to the first hinge seat. When the two sets of second support mechanisms are unfolded in a V-shape and the openings of the two sets of second support mechanisms face away from the first support mechanism, the first support mechanism and the two sets of second support mechanisms form a Y-shape. The two sets of second support mechanisms are located in the uterine cavity of the bicornuate uterus, supporting the bicornuate uterus. When one set of second support mechanisms is stationary and the other set of second support mechanisms is unfolded at an acute angle to the first support mechanism, the first support mechanism and the two sets of second support mechanisms are located in the uterine cavity of the unicornuate uterus, supporting the unicornuate uterine cavity.

[0006] As an optional solution, the first support mechanism further includes a first airbag, to which a first air supply pipe is connected. A fixing cavity is formed on the first connecting rod, the fixing cavity extending radially through the first connecting rod. The first airbag is located within the fixing cavity. A mating sleeve is fitted onto the first connecting rod, the mating sleeve being located to the right of the first fixing block. The fixing cavity extends through the mating sleeve, and the mating sleeve is fixedly connected to the second fixing block. One end of the first airbag contacts the second fixing block. Two sets of first mating rods are provided on the second fixing block. Two sets of fixing holes are formed on the first movable block, and the two sets of first mating rods are slidably engaged in the two sets of fixing holes. A blocking component is provided on the first mating rod, the blocking component including a first locking block. One side of the first locking block is inclined. A first locking groove and a fixing groove are formed on the first mating rod, the first locking groove communicating with the fixing groove. The first locking block is slidably engaged in the first locking groove. A rectangular block is fixedly connected to the first locking block, the rectangular block being slidably engaged in the fixing groove. A spring is provided in the fixing groove, with both ends of the spring contacting the rectangular block and the bottom wall of the fixing groove, respectively.

[0007] As an optional solution, the first support mechanism is provided with a top support assembly, which is connected between the second fixed block and the first movable block. The top support assembly includes a first connecting block and a third connecting block. One end of the first connecting block is hinged to the second fixed block, and one end of the third connecting block is hinged to the first movable block. Both the first connecting block and the third connecting block are inclined. A second connecting block is provided between the first connecting block and the third connecting block. The second connecting block is horizontal, and both ends of the second connecting block are hinged to the first connecting block and the third connecting block, respectively. The first connecting block, the second connecting block, and the third connecting block can form an isosceles trapezoid.

[0008] As an optional solution, a first auxiliary support assembly is provided on both sides of the first movable block. The first auxiliary support assembly contacts the diaphragm and is used to lift the diaphragm. The first auxiliary support assembly includes a second movable block, which is hinged to the first fixed block. The second movable block is inclined and U-shaped. Two sets of third movable blocks are hinged to the second movable block. The two sets of third movable blocks are horizontal and parallel. A fourth movable block is provided between the two sets of third movable blocks. The fourth movable block contacts the two sets of third movable blocks on both sides. A fifth movable block is hinged to the fourth movable block. The fifth movable block is inclined. A third fixed block is fixedly connected to the first movable block. The third fixed block is perpendicular to the first movable block. The fifth movable block is hinged to the third fixed block. A first sliding groove is provided on the fourth movable block. A first sliding block is provided on one side of each of the two sets of third movable blocks. The two sets of first sliding blocks are slidably engaged in the two sets of first sliding grooves.

[0009] As an optional solution, a second connecting rod is fixedly connected to the mating block, and a second auxiliary support assembly is provided on both sides of the second connecting rod. The second auxiliary support assembly contacts the diaphragm and is used to lift the diaphragm. The second auxiliary support assembly includes a second movable rod, which is inclined. A first movable rod is fixedly connected to the second connecting rod. The first movable rod is perpendicular to the second connecting rod. One end of the second movable rod is hinged to the first movable rod, and the other end of the second movable rod is hinged to a third movable rod, which is horizontal. A fourth movable rod is provided on the right side of the third movable rod, and the third movable rod is parallel to the fourth movable rod. A second sliding block is fixedly connected to the third movable rod, and a second sliding groove is provided on the fourth movable rod. The second sliding block is slidably engaged in the second sliding groove.

[0010] As an optional solution, a second support mechanism is provided on both sides of the first support mechanism. The first support mechanism and the two sets of second support mechanisms are located on the same horizontal plane. A fixed frame is provided on the first movable block. A second airbag is fixed in the fixed frame. The second airbag is arc-shaped. The two ends of the second airbag are respectively in contact with the second connecting rods on the two sets of second support mechanisms. A second air supply pipe is connected to the fixed frame. Arc-shaped plates are fixedly connected to both ends of the fixed frame. The arc-shaped plates are arc-shaped. The second airbag is located between the two sets of arc-shaped plates. The two sets of arc-shaped plates are used to limit the position of the second airbag.

[0011] As an optional solution, the second auxiliary support component is connected to the first auxiliary support component, and the second auxiliary support component moves when the first auxiliary support component moves vertically; an arc-shaped frame is fixedly connected to the fourth movable block, the arc-shaped frame is arc-shaped, a limit groove is opened on the arc-shaped frame, a limit block is fixedly connected to the fourth movable rod, and the limit block is slidably locked on the limit groove.

[0012] As an optional solution, a first shaping mechanism is provided on both sides of the first fixing block. The first shaping mechanism includes a first support frame, on which a first arc-shaped block is fixedly connected. The first arc-shaped block is arc-shaped and contacts the diaphragm. A fixing seat is fixedly connected to the first fixing block, and a second hinge seat is provided on the fixing seat. The first support frame is hinged to the second hinge seat. A spring is provided on the fixing seat, with its fixed end fixed to the fixing seat and its elastic end in contact with the first support frame. A first rope is fixedly connected to the first support frame, and a connecting seat is fixedly connected to the second fixing block. The first rope passes through the connecting seat, and the connection point between the first rope and the first support frame is located at the end away from the spring.

[0013] As an optional solution, the second connecting rod is provided with a detachable second shaping mechanism, the second shaping mechanism including a second support frame, a second fixing block fixedly connected to the second support frame, the second fixing block being arc-shaped and in contact with the diaphragm, two sets of second mating rods fixedly connected to the second support frame, the second mating rods being provided with second locking blocks, the second connecting rod having a second locking groove, the second locking block being engaged in the second locking groove; the first movable rod is fixedly connected with a second fixing block, the second fixing block passing through the connecting seat.

[0014] As an optional solution, a clamping mechanism is provided inside one set of the second connecting rods. The clamping mechanism includes a first sealing strip and a second sealing strip. The first sealing strip and the second sealing strip are vertically distributed on the second connecting rod. The first sealing strip and the second sealing strip are both fixedly connected to the second connecting rod. The first sealing strip and the second sealing strip cooperate with each other. The first sealing strip can be fastened to the second sealing strip. A fixing groove is provided on the second connecting rod. The fixing groove is located between the first sealing strip and the second sealing strip.

[0015] As described above, the intrauterine stent of the present invention has at least the following beneficial effects: During support, the first support mechanism is moved to the designated position by the first airbag, and then the second support mechanism is moved to the designated position by the second airbag, thus completing the support of the uterus. In conjunction with the first and second shaping mechanisms, the diaphragm is evenly lifted in the surrounding and central areas to form a complete barrier, which can effectively prevent intrauterine adhesions.

[0016] Based on the shape of the patient's uterus (pear-shaped, notched pear-shaped, and Y-shaped), the second shaping mechanism is disassembled and the initial position of the second support mechanism is adjusted for different uterine shapes. This allows for adaptation to different uterine shapes. Without replacing the main skeleton, it can adapt to patients with unicornuate and bicornuate uteruses, greatly expanding the clinical applicability. At the same time, the intrauterine stent can adapt to the shape of the patient's uterus, and under the premise of adaptation, it can make the diaphragm fit as closely as possible to the patient's uterine wall, improving the anti-adhesion effect. Attached Figure Description

[0017] Figure 1 The diagram shown is a schematic representation of the structure of the present invention. Figure 2 The diagram shown is a schematic representation of the internal structure of the present invention. Figure 3 The diagram shown is an exploded view of the present invention. Figure 4 The diagram shown is a structural schematic of the first support mechanism of the present invention. Figure 5 Shown is an exploded view of the first support mechanism of the present invention; Figure 6 Shown as the present invention Figure 5 A magnified view of a section at point A in the middle; Figure 7 Shown is a cross-sectional view of the first support mechanism of the present invention; Figure 8 Shown as the present invention Figure 7 A magnified view of a section at point B in the middle; Figure 9The diagram shown is a structural schematic of the second support mechanism of the present invention. Figure 10 The diagram shows the connection structure between the first support mechanism and the second support mechanism of the present invention. Figure 11 The present invention is shown as being located within a bicornuate uterus; Figure 12 The image shows the morphology of the present invention located within a unicornuate uterus.

[0018] In the picture: Diaphragm 101; First fixing block 201, first connecting rod 202, fixing cavity 203, first airbag 204, first air supply pipe 205, mating sleeve 206, second fixing block 207, first connecting block 208, second connecting block 209, third connecting block 210, first movable block 211, first mating rod 212, fixing hole 213, third fixing block 214, second movable block 215, third movable block 216, fourth movable block 217, fifth movable block 218, first sliding groove 219, first sliding block 220; First slot 301, fixing slot 302, first locking block 303, rectangular block 304, spring 305; The components are: mating block 401, first hinge seat 402, second connecting rod 403, first movable rod 404, second movable rod 405, third movable rod 406, fourth movable rod 407, second sliding block 408, and second sliding groove 409. Limiting block 501, arc frame 502, limiting groove 503, arc plate 504, fixing frame 505, second airbag 506, second air supply pipe 507; First support frame 601, first arc block 602, fixed seat 603, second hinge seat 604, spring piece 605, first rope 606, connecting seat 607; Second support frame 701, second mating rod 702, second locking block 703, second locking groove 704, second fixing block 705, second rope 706; Fixed groove 801, first sealing strip 802, second sealing strip 803. Detailed Implementation

[0019] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0020] Please see Figures 1 to 10It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0021] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0022] Please see Figures 1 to 8 This invention provides an intrauterine stent, including a diaphragm 101. A first support mechanism is disposed inside the diaphragm 101, located at the center of the diaphragm 101 and vertically placed inside the diaphragm 101. The first support mechanism includes a first fixing block 201, which is internally bonded to the diaphragm 101. A first connecting rod 202 is fixedly connected to the right side of the first fixing block 201. The first connecting rod 202 is horizontally placed and has a radially penetrating fixing cavity 203. A first airbag 204 is placed inside the fixing cavity 203, and a first air supply tube 205 is connected to the first airbag 204. A mating sleeve 206 is fitted onto the first connecting rod 202, through which the first connecting rod 202 passes. The sleeve 206 can move horizontally on the first connecting rod 202. The first airbag 204 is completely located inside the sleeve 206. The sleeve 206 is used to limit the first airbag 204. A second fixing block 207 is fixedly connected to the right side of the sleeve 206. The right end of the first airbag 204 contacts the left end of the second fixing block 207. Two sets of first mating rods 212 are provided on the right side of the second fixing block 207. The two sets of first mating rods 212 are inserted into the first movable block 211. Two sets of fixing holes 213 are opened on the first movable block 211. The two sets of first mating rods 212 are slidably locked in the fixing holes 213 respectively. The first mating rods 212 can slide horizontally on the first movable block 211. Please see Figures 4 to 7A top support assembly is connected between the second fixed block 207 and the first movable block 211. The top support assembly includes a first connecting block 208 and a third connecting block 210. One end of the first connecting block 208 is hinged to the second fixed block 207, and one end of the third connecting block 210 is hinged to the first movable block 211. A second connecting block 209 is provided in front of the first connecting block 208 and the third connecting block 210. The second connecting block 209 is horizontal, and both ends of the second connecting block 209 are respectively hinged to the first connecting block 208 and the third connecting block 210. The first connecting block 208, the second connecting block 209, the third connecting block 210 and the first mating rod 212 form an isosceles trapezoid. Please see Figure 4 The first movable block 211 has first auxiliary support components on both its upper and lower sides. These first auxiliary support components are in contact with the top support component. Each first auxiliary support component includes a second movable block 215, which is U-shaped and inclined. The second movable block 215 has one port on its left side and two ports on its right side. The left end of the second movable block 215 is hinged to the first fixed block 201. Two third movable blocks 216 are hinged to the two right ends of the second movable block 215. The two sets of third movable blocks 216 are parallel and horizontal, and are in contact with each other. A fourth movable block 217 is slidably mounted between the two sets of third movable blocks 216. The bottom surface of the fourth movable block 217 is in contact with the top surface of the second connecting block 209. 217 is horizontal. The two sides of the fourth movable block 217 are in contact with the two sets of third movable blocks 216 respectively. The fourth movable block 217 has a first sliding groove 219 on both sides. The surfaces of the two sets of third movable blocks 216 in contact with the fourth movable block 217 have a first sliding block 220. The two sets of first sliding blocks 220 are slidably locked in the two sets of first sliding grooves 219. The end of the fourth movable block 217 away from the third movable block 216 is hinged to a fifth movable block 218. The fifth movable block 218 is inclined. The other end of the fifth movable block 218 is hinged to a third fixed block 214. The third fixed block 214 is vertical. The third fixed block 214 is fixedly connected to the first movable block 211. The third fixed block 214 is perpendicular to the first movable block 211. Please see Figures 5 to 8A blocking component is provided on the first mating rod 212. The blocking component includes a first locking block 303, one side of which is inclined. A first locking groove 301 is provided on the first mating rod 212. The first locking block 303 is slidably locked in the first locking groove 301. A rectangular block 304 is fixedly connected to the first locking block 303. A fixing groove 302 is provided on the bottom wall of the first locking groove 301. The first locking groove 301 communicates with the fixing groove 302. The rectangular block 304 is slidably locked in the fixing groove 302. The rectangular block 304 can slide radially along the first mating rod 212 in the fixing groove 302. A spring 305 is provided in the fixing groove 302. The two ends of the spring 305 are in contact with the rectangular block 304 and the bottom wall of the fixing groove 302, respectively.

[0023] In the initial state, the top support assembly is slightly arched. At this time, the tilt angles of the first connecting block 208 and the third connecting block 210 are small, and the tilt angles of the second movable block 215 and the fifth movable block 218 are also small. The entire first support mechanism is relatively compact. At this time, the first auxiliary support mechanism is located closest to the first movable block 211. When the first support mechanism moves, it slowly inflates the first airbag 204 through the first air supply pipe 205. The first airbag 204 expands within the mating sleeve 206, thereby pushing the second fixed block 207 to move to the right. The second fixed block 207 drives the mating sleeve 206 to slide horizontally on the first connecting rod 202. At this time, due to the resistance... The blocking component applies resistance between the second fixed block 207 and the first movable block 211, so the second fixed block 207 can drive the top support component, the first mating rod 212 and the first movable block 211 to move horizontally to the right as a whole. The first movable block 211 drives the third fixed block 214 to move to the right. When the third fixed block 214 moves to the right, it drives the fifth movable block 218 and the fourth movable block 217 to move. The fourth movable block 217 moves between the two sets of third movable blocks 216, thereby driving the first sliding block 220 to slide on the first sliding groove 219 until the third fixed block 214 contacts the uterine wall. At this time, the third fixed block 214 abuts against the uterine wall. Then, inflation continues into the first airbag 204, which continues to push the second fixing block 207 to move. However, since the third fixing block 214 is pressing against the uterine wall, the first movable block 211 experiences reverse resistance from the uterine wall. When the second fixing block 207 moves the first mating rod 212, due to the resistance of the first movable block 211, the first mating rod 212 moves the first locking block 303. The inclined surface of the first locking block 303 engages with the port of the fixing hole 213, causing the first locking block 303 to slide within the first locking groove 301. The first locking block 303 drives the rectangular block 304 to slide within the fixing groove 302. At this time, the spring 305 is compressed until the first locking block 303 is completely moved into the first locking groove 301. At this time, the first mating rod 212 can slide within the fixing hole 213. At this time, the first connecting rod... Both 202 and the first movable block 211 are stationary, while only the second fixed block 207 and the first mating rod 212 move. At this time, the distance between the second fixed block 207 and the first movable block 211 is shortened, thereby causing the top support assembly to lift up. At this time, the first connecting block 208 and the third connecting block 210 rotate on the second fixed block 207 and the first movable block 211, increasing the tilt angle of the first connecting block 208 and the third connecting block 210, thereby causing the second connecting block 209 to move upward. The second connecting block 209 causes the first auxiliary support assembly to move upward until the first auxiliary support assembly moves to a suitable position and stops inflating the first airbag 204. Since the top support assembly is always in contact with the first auxiliary support assembly, the second connecting block 209 always remains horizontal, and the arching movement of the top support assembly is smooth and symmetrical.

[0024] When the support assembly arches, the second connecting block 209 drives the fourth movable block 217 to move upward. The fourth movable block 217 drives the two sets of third movable blocks 216 to move upward, and at the same time drives one end of the second movable block 215 and the fifth movable block 218 to move upward. At this time, the tilt angle of the second movable block 215 and the fifth movable block 218 increases. At the same time, the fourth movable block 217 and the third movable block 216 move horizontally relative to each other, causing the first sliding block 220 to slide in the first sliding groove 219. The fourth movable block 217 and the third movable block 216 push the diaphragm 101 upward, so that the diaphragm 101 contacts the uterine wall.

[0025] Please see Figure 2 , Figure 3 and Figure 9The first support mechanism has second support mechanisms on both its left and right sides. The second support mechanisms are hinged to the first movable block 211 and can rotate horizontally around the first support mechanism. Each second support mechanism includes a mating block 401. A first hinge seat 402 is fixedly connected to the first movable block 211, and the mating block 401 is hinged to the first hinge seat 402. A second connecting rod 403 is fixedly connected to the mating block 401. The second connecting rod 403 and the first movable block 211 are located on the same horizontal plane, and the second connecting rod 403 is placed horizontally. A fixed frame 505 is fixed on a movable block 211. An arc-shaped second airbag 506 is fixedly connected inside the fixed frame 505. A second air supply pipe 507 is connected to the second airbag 506. The second airbag 506 is located between two sets of second support mechanisms. The two ends of the second airbag 506 are in contact with the second connecting rods 403 of the two sets of second support mechanisms, respectively. Arc-shaped plates 504 are fixedly connected to both the upper and lower ends of the fixed frame 505. The second airbag 506 is located between the two sets of arc-shaped plates 504. The arc-shaped plates 504 are used to limit the movement of the second airbag 506. Please see Figure 9 The second connecting rod 403 has second auxiliary support components on both its upper and lower sides. Each second auxiliary support component includes a fourth movable rod 407, on which a movable third movable rod 406 is mounted. Both the third movable rod 407 and the fourth movable rod 407 are horizontal. A second sliding block 408 is mounted on the third movable rod 406, and a second sliding groove 409 is formed on the fourth movable rod 407. The second sliding block 408 is slidably engaged within the second sliding groove 409. A third movable rod 406 is hinged to a third... Two movable rods 405 are inclined, and the other end of the second movable rod 405 is hinged to the first movable rod 404. The first movable rod 404 is vertical and fixedly connected to the second connecting rod 403. The first movable rod 404 is perpendicular to the second connecting rod 403. A second rope 706 is provided on the first movable rod 404. A connecting seat 607 is provided on the second fixing block 207. The second rope 706 passes through the connecting seat 607, and the other end of the second rope 706 is located outside the diaphragm 101. Please see Figure 10 A limiting block 501 is fixedly connected to the fourth movable rod 407. A horizontal arc-shaped frame 502 is fixedly connected to the fourth movable block 217. The arc-shaped frame 502 is arc-shaped and a limiting groove 503 is opened on the arc-shaped frame 502. The limiting groove 503 is also arc-shaped. The limiting block 501 is slidably locked in the limiting groove 503.

[0026] When the second support mechanism is moved, air is inflated into the second airbag 506 through the second air supply pipe 507. The second airbag 506 inflates, driving the two sets of first support mechanisms to move to both sides of the first support mechanism. At this time, the cooperating block 401 rotates on the first hinge seat 402. The cooperating block 401 drives the entire second support mechanism to rotate, causing the fourth movable rod 407 to move. The fourth movable rod 407 drives the limiting block 501 to slide in the limiting groove 503, and at the same time pulls the second fixed block 207. The second fixed block 207 cooperates with the second airbag 506 to control the trajectory of the second support mechanism until the second support mechanism moves to the designated position. Then, the air is inflated into the second airbag 506, and the second fixed block 207 is bound to fix the second support mechanism and prevent the second support mechanism from rotating around the first support mechanism. When the fourth movable block 217 moves upward, it drives the arc-shaped frame 502 to move upward. Through the cooperation of the limiting block 501 and the limiting groove 503, it drives the fourth movable rod 407 to move upward. At the same time as the fourth movable rod 407 moves upward, the third movable rod 406 drives the second movable rod 405 to rotate, increasing the tilt angle of the second movable rod 405. At this time, the two ends of the second movable rod 405 rotate on the first movable rod 404 and the third movable rod 406 respectively, thereby pulling the third movable rod 406 to move horizontally, causing the second sliding block 408 to slide in the second sliding groove 409. The third movable rod 406 and the fourth movable rod 407 push the diaphragm 101 outward, so that the diaphragm 101 contacts the uterine wall.

[0027] Please see Figure 2 and Figure 3 The first fixing block 201 has a first shaping mechanism on both its left and right sides. Each shaping mechanism includes a fixing seat 603, which is fixedly connected to the first fixing block 201. A second hinge seat 604 is fixedly connected to the fixing seat 603, and a first support frame 601 is hinged to the second hinge seat 604. A first arc-shaped block 602 is provided on the first support frame 601. The first arc-shaped block 602 is arc-shaped and made of flexible material, contacting the diaphragm 101. The fixing seat 603 also has... A spring piece 605 is provided, with its fixed end fixed to the fixed base 603. The elastic end of the spring piece 605 contacts the first support frame 601. A first rope 606 is fixedly connected to the first support frame 601. The connection point between the first rope 606 and the first support frame 601 is located at the end of the first support frame 601 away from the spring piece 605. The first rope 606 passes through the connecting base 607, and the other end of the first rope 606 is located outside the diaphragm 101. The first rope 606 is used to pull the first support frame 601.

[0028] Please see Figure 3 and Figure 10Each of the two sets of second connecting rods 403 is provided with a second shaping mechanism. The second shaping mechanism is detachably connected to the second connecting rod 403. The second shaping mechanism includes a second support frame 701. An arc-shaped second fixing block 207 is fixedly connected to the second support frame 701. The second fixing block 207 is made of flexible material and contacts the diaphragm 101. Two sets of second mating rods 702 are fixedly connected to the second support frame 701. The second mating rods 702 are provided with second locking blocks 703. The second connecting rod 403 is provided with two sets of second locking slots 704. The two sets of second locking blocks 703 are respectively locked onto the two sets of second locking slots 704. The first arc-shaped block 602 and the second fixed block 207 are both made of flexible materials and do not have active deformation capabilities. They can only passively conform to the shape of the uterine cavity under the squeezing force of the uterine wall. The first shaping mechanism and the second shaping mechanism can tighten the diaphragm 101 so that the diaphragm 101 can form a pear-shaped outline, so that the diaphragm 101 can fit more closely to the uterine wall and cover the uterine wall more comprehensively. The two sets of first shaping mechanisms and the two sets of second shaping mechanisms can form a pear shape, which is more in line with the shape of the uterus. The diaphragm 101 is used to prevent the uterine wall from sticking. At the same time, a certain amount of sodium hyaluronate or carboxymethyl cellulose can be applied to the outer surface of the diaphragm 101. Sodium hyaluronate and carboxymethyl cellulose both have the effect of promoting wound healing and can shorten the healing cycle of the uterine wall.

[0029] The other ends of the second gas supply pipe 507 and the first gas supply pipe 205 are both connected to an air pump. The air pump can fill the second gas supply pipe 507 or the first gas supply pipe 205 with gas. Although the air pump is not shown in the figure, the air pump is a commonly used technical means by those skilled in the art, and its structure, connection method and usage are well known to those skilled in the art.

[0030] Please see Figure 9 One of the sets of second connecting rods 403 is provided with a clamping mechanism, which includes a first sealing strip 802 and a second sealing strip 803. The first sealing strip 802 and the second sealing strip 803 are both fixedly connected to the second connecting rod 403. A fixing groove 302 is provided on the second connecting rod 403. The fixing groove 302 is equal in length to the first sealing strip 802 and the second sealing strip 803. The first sealing strip 802 and the second sealing strip 803 are located on the upper and lower sides of the fixing groove 302, respectively. The first sealing strip 802 and the second sealing strip 803 are vertically aligned, and the first sealing strip 802 can be engaged with the second sealing strip 803.

[0031] When supporting a unicornuate uterus, since the unicornuate uterus is not pear-shaped, while the area of ​​the diaphragm 101 is still pear-shaped, the clamping mechanism folds the excess part of the diaphragm 101 and inserts it into the fixing groove 302 for clamping and fixing. This ensures that the effective supporting area of ​​the diaphragm 101 on this side is precisely matched with the actual uterine cavity space of the patient, preventing the excess part of the diaphragm 101 from forming ineffective folds or redundant protrusions in the uterine cavity. This would not only fail to provide support but may also cause abnormal local pressure or occupy limited space.

[0032] In summary, when this invention is used to support a normal uterus, the first step is to check the intrauterine support and ensure that both sets of second shaping mechanisms are installed on the corresponding second connecting rods 403. Then, the first and second support mechanisms are in a contracted state, with the second support mechanism fitting against the first support mechanism and the second support mechanism positioned to the left of the first hinge seat 402. Next, the diaphragm 101 is fitted over the first and second support mechanisms, and the interior of the diaphragm 101 is bonded to the first fixing block 201, the first arc-shaped block 602, and the second fixing block 207. This ensures that when the diaphragm 101 is opened, it can be supported into a specified shape, thereby ensuring the best anti-adhesion effect. At the same time, the first rope 606 is in a traction state, and the first rope 606 uses traction to ensure that the first shaping mechanism is in a contracted state. At this time, the first support frame 601 is in contact with the first support mechanism, and the spring 605 is compressed. The uterine stent is then inserted into the patient's uterus. At this time, both the first and second support mechanisms are folded and do not provide support to the uterine wall. The air pump is then activated, injecting air into the first balloon 204 through the first air supply tube 205. The first balloon 204 gradually inflates, pushing the second fixing block 207 to the right. The second fixing block 207 causes the mating sleeve 206 to slide to the right on the first connecting rod 202. At this time, the blocking component prevents the first mating rod 212 from sliding within the fixing hole 213. Therefore, when the second fixing block 207 moves to the right... It can simultaneously drive the first movable block 211, the third fixed block 214 and the top support assembly to move as a whole. When the third fixed block 214 moves to the right, it drives the fourth movable block 217 to move through the fifth movable block 218. However, since the tilt angle of the fifth movable block 218 has not changed, the fourth movable block 217 mainly moves in the horizontal direction under the pulling force of the fifth movable block 218. At this time, the first sliding block 220 slides in the first sliding groove 219, and the third movable block 216 does not move. At the same time, the first movable block 211 drives the second support mechanism to move to the right until the third fixed block 214 contacts the uterine wall. Then, temporarily stop inflating the first air supply pipe 205 and instead inflat the second air supply pipe 507. Gas enters the second airbag 506 through the second air supply pipe 507. After the second airbag 506 inflates, its two ends extend outward, pushing the second connecting rods 403 located on both sides. The second connecting rods 403 drive the mating block 401 to rotate around the first hinge seat 402. At this time, the distance between the first movable rod 404 and the first support mechanism increases. Simultaneously, the operator pulls the second fixed block 207 to control the rotation angle of the second support mechanism. At this time, the limiting groove 503 slides within the limiting block 501 until the second support mechanism rotates to the appropriate angle, and then stop inflating the second air supply pipe. When the tube 507 is inflated, the second connecting rod 403 rotates, causing the second shaping mechanism to rotate synchronously. When the second fixing block 207 rotates outward, it causes the diaphragm 101 to expand horizontally outward, so that the diaphragm 101 fits against the uterine wall. At the same time, the second fixing block 207 is passively shaped by the uterine wall. At this time, the second fixing block 207 can fit against the uterine wall, thus ensuring that the diaphragm 101 can fit tightly against the uterine wall. Then the second fixing block 207 is fixed. The traction force of the second fixing block 207 on the second support mechanism and the support force of the second air supply tube 507 on the second support mechanism work together to fix the second support mechanism, thus ensuring that the second support mechanism will not move arbitrarily. Then, air continues to be pumped into the first air inlet pipe 205, and the first airbag 204 continues to expand, causing the second fixing block 207 to move. Since the second fixing block 207 applies a traction force to the second support mechanism at this time, and this traction force is directed towards the first fixing block 201, while the traction force ensures that the first support mechanism remains stationary, the inlet edge of the fixing hole 213 continuously presses against the inclined surface of the first locking block 303, causing the first locking block 303 to slide in the first locking slot 301. At the same time, it causes the rectangular block 304 to compress the spring 305, compressing the spring 305, until the first locking block 303 has completely moved into the first locking slot 301. Inside, the first mating rod 212 can slide freely within the fixing hole 213. At this time, both the first mating rod 212 and the third fixing block 214 remain stationary. The second fixing block 207 moves to the right relative to the first movable block 211. As the distance between the second fixing block 207 and the first movable block 211 shortens, the top support assembly gradually arches. The first connecting block 208 and the third connecting block 210 rotate around the second fixing block 207 and the first movable block 211. At this time, the tilt angle of the first connecting block 208 and the third connecting block 210 increases, thereby causing the second connecting block 209 to move upward, achieving the arching effect. As a result, the height of the arch of the second connecting block 209 is inversely proportional to the distance between the second fixed block 207 and the first movable block 211. The upward movement of the second connecting block 209 will cause the first auxiliary support assembly to move vertically upward. The second connecting block 209 will directly push upward, at which point the first sliding block 220 will slide horizontally relative to the first sliding groove 219, simultaneously causing the fifth movable block 218 and the second movable block 215 to rotate upward, increasing the tilt angle of the fifth movable block 218 and the second movable block 215. The upward movement of the fourth movable block 217 simultaneously causes the arc-shaped frame 502 to move, and the arc-shaped frame 502 moves through... The limiting groove 503 drives the limiting block 501 to move vertically upward. At this time, the second movable rod 405 rotates upward and the tilt angle of the second movable rod 405 increases. At this time, the second movable rod 405 drives the third movable rod 406 to move horizontally to the left, thereby increasing the distance between the third movable rod 406 and the fourth movable rod 407, so that the second sliding block 408 slides in the second sliding groove 409 until the fourth movable block 217 and the fourth movable rod 407 are in contact with the uterine wall. At this time, the vertical support of the first support mechanism and the second support mechanism has been completed. At this time, the upper and lower sides of the diaphragm 101 are in contact with the uterine wall. Finally, the staff appropriately loosens the second fixing block 207, while applying a certain traction force to the second fixing block 207 to ensure that the elastic force applied by the spring 605 to the first support frame 601 can drive the first support frame 601 to rotate on the second hinge seat 604. At this time, the first plastic mechanism slowly opens until the first arc-shaped block 602 contacts the patient's uterine wall. Then, the second fixing block 207 is pulled, and in conjunction with the elastic force applied by the spring 605 to the first support frame 601, the first support frame 601 is fixed. At this time, the diaphragm 101 has been fully opened with the cooperation of the first support mechanism, the second support mechanism, the first plastic mechanism, and the second plastic mechanism. At this time, the diaphragm 101 is pear-shaped and can completely fit the uterine wall.

[0033] When the intrauterine stent needs to be retracted, the air in the first airbag 204 and the second airbag 506 is first released. At this time, the first support mechanism and the second support mechanism are not subjected to any force, so they cannot support the uterus. Then, the first rope 606 and the second fixing block 207 are pulled. The first rope 606 drives the first shaping mechanism to rotate. At this time, the first shaping mechanism moves closer to the first support mechanism, and the spring 605 is compressed until the first shaping mechanism contacts the first support mechanism. At this time, the first shaping mechanism cannot support the uterus. The second fixing block 207 can drive the second support mechanism and the second shaping mechanism to move closer to the first support mechanism, so that the second support mechanism rotates around the first hinge seat 402 until the second support mechanism contacts the first support mechanism. At this time, the second shaping mechanism cannot support the uterus. At this time, the first support mechanism, the second support mechanism, the first shaping mechanism and the second shaping mechanism do not apply pressure to the uterine wall, and the staff can successfully remove the intrauterine stent from the patient's uterus.

[0034] like Figure 12As shown, when using support for a unicornuate uterus, since one uterine horn is missing, the second shaping mechanism on the second connecting rod 403 connected to the clamping mechanism needs to be removed. When removing the second shaping mechanism, the second support frame 701 is moved vertically upward. The second support frame 701 drives the second mating rod 702 and the second locking block 703 to move vertically upward, causing the second locking block 703 to separate from the second locking groove 704, thus completing the removal of the second shaping mechanism. At this time, the diaphragm 101 still has the initial pear shape, but for a unicornuate uterus, there will be an excess part on the side missing the uterine horn. At this time, it is only necessary to insert the excess part into the fixing groove on the second connecting rod 403 on the same side. Inside 302, the first sealing strip 802 and the second sealing strip 803 are fastened together to clamp and fix them. At this time, the shape of the diaphragm 101 is a relatively complete pear shape missing a corner. This shape is highly similar to the shape of a unicornuate uterus. Then, it is installed according to the normal uterus installation process. The difference from the normal uterus installation process is that when the second support mechanism is rotated, 706 on the second support mechanism holding the diaphragm 101 is pulled and fixed. At this time, 506 can only drive the second support mechanism with the second shaping mechanism to move. The second support mechanism holding 101 remains stationary. At this time, the diaphragm 101 can fit the endometrium of the unicornuate uterus as closely as possible, achieving effective support and anti-adhesion.

[0035] like Figure 11 As shown, for patients with bicornuate uterus, the uterine cavity is Y-shaped or inverted triangle with the two uterine horns separated. In this case, it is necessary to remove both sets of first shaping mechanisms and both sets of second shaping mechanisms. When removing the first shaping mechanism, simply remove 601 from 604. Then, inflate the second air bag 506 through the second air supply tube 507. The expansion of the second air bag 506 pushes the two sets of second connecting rods 403 to rotate outward around the first hinge seat 402 until the two sets of second support mechanisms are rotated 180 degrees. At this time, the first support mechanism and the two sets of second support mechanisms are in a straight line in a straight line. The second support mechanism is located on the right side of the first hinge seat 402, and the overall length is significantly increased compared to the conventional shape. The stent is then inserted into the patient's uterus. As the stent is gradually pushed in, the second support mechanism is pulled by the second rope 706 according to the actual depth of the uterus and the position of the uterine horns. At the same time, the gas in the second balloon 506 is released appropriately. Through the cooperation of the second rope 706 and the second balloon 506, the second support mechanism is rotated outward around the first hinge seat 402, opening in a Y-shape. During this process, the first support mechanism is located in the center, and the two sets of second support mechanisms point to the two uterine horns respectively. As the intrauterine stent is continuously inserted into the patient's body, the rotation angle of the two sets of second support mechanisms also increases. If one set of second support mechanisms moves to the appropriate position, but the other set of second support mechanisms has not moved to the appropriate position, the staff will fix the second rope 706 of the second support mechanism that has been pulled to the appropriate position. At this time, only the second support mechanism that has not moved to the appropriate position is being pulled. The second fixed block 207 of the second support mechanism. At this time, the second support mechanism that has moved to the appropriate position will not move. Only the second support mechanism that has not moved to the appropriate position will move until the first support mechanism and the two sets of second support mechanisms have all moved to the appropriate position. At this time, the diaphragm 101 is supported by the first support mechanism, the second support mechanism and the uterine wall in cooperation, forming a Y-shaped outline. Then, air is inflated into the first airbag 204, so that the first auxiliary support component and the second auxiliary support component are vertically lifted, further supporting the uterus and making the diaphragm 101 contact the uterine wall. Then, the first plastic mechanism is deployed to complete the support of the uterus. When the support is fully in place, the uterine wall will passively squeeze and shape the diaphragm 101 and its internal flexible plastic parts, so that the diaphragm 101 is finally approximately Y-shaped, which is highly consistent with the shape of the bicornuate uterus, thereby obtaining better support and anti-adhesion effect. When the intrauterine stent in this state needs to be removed, the gas in the first balloon 204 is first released to release the support of the first and second support mechanisms on the uterine wall. Then, the second balloon 506 is inflated, and the second balloon 506 drives the two sets of second support mechanisms to rotate, so that the first and second support mechanisms slowly change from a Y shape to a straight line. At the same time, the second rope 706 is pulled to ensure the rotation angle of the second support mechanism. While rotating the second support mechanism, the intrauterine stent is slowly moved out of the uterus to prevent the second support mechanism from coming into horizontal contact with the uterine wall due to excessive rotation angle or horizontal displacement during the removal of the intrauterine stent. This ensures that the intrauterine stent can be smoothly removed from the patient's uterus.

[0036] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A uterine stent, characterized in that... Includes a diaphragm, which is used to prevent adhesion of the uterine wall. A first support mechanism is located within the diaphragm and is used to support the diaphragm. The first support mechanism includes a first fixed block, the diaphragm is in contact with the first fixed block, a first connecting rod is fixedly connected to the first fixed block, a second fixed block is slidably connected to the first connecting rod along its length, and a first movable block is slidably connected to the second fixed block along its length. Two sets of second support mechanisms are provided, each supporting the diaphragm. These second support mechanisms are hinged to the first movable block and are capable of horizontal rotation around the first movable block. The second support mechanism includes a mating block, and a first hinge seat is fixedly connected to the first movable block, with the mating block hinged to the first hinge seat; When the two sets of second support mechanisms are deployed in a V-shape and the openings of the two sets of second support mechanisms face away from the first support mechanism, the first support mechanism and the two sets of second support mechanisms form a Y-shape. The two sets of second support mechanisms are located in the uterine cavity of the bicornuate uterus, providing support for the bicornuate uterus. When one set of the second support mechanisms is stationary and the other set of the second support mechanisms is deployed at an acute angle to the first support mechanism, the second support mechanism at the acute angle to the first support mechanism supports the unicornuate uterine cavity.

2. The intrauterine stent according to claim 1, characterized in that: The first support mechanism further includes a first airbag, to which a first air supply pipe is connected. A fixing cavity is formed on the first connecting rod, which extends radially through the first connecting rod. The first airbag is located inside the fixing cavity. A fitting sleeve is fitted on the first connecting rod, which is located to the right of the first fixing block. The fixing cavity extends through the fitting sleeve, which is fixedly connected to the second fixing block. One end of the first airbag contacts the second fixing block. Two sets of first fitting rods are provided on the second fixing block. Two sets of fixing holes are formed on the first movable block, and the two sets of first fitting rods are slidably engaged in the two sets of fixing holes. The first mating rod is provided with a blocking component, the blocking component includes a first locking block, one side of the first locking block is inclined, the first mating rod is provided with a first locking groove and a fixing groove, the first locking groove is connected to the fixing groove, the first locking block is slidably locked in the first locking groove, a rectangular block is fixedly connected to the first locking block, the rectangular block is slidably locked in the fixing groove, a spring is provided in the fixing groove, and the two ends of the spring are respectively in contact with the rectangular block and the bottom wall of the fixing groove.

3. The intrauterine stent according to claim 2, characterized in that: The first support mechanism is provided with a top support component, which is connected between the second fixed block and the first movable block; The top support assembly includes a first connecting block and a third connecting block. One end of the first connecting block is hinged to the second fixed block, and one end of the third connecting block is hinged to the first movable block. Both the first and third connecting blocks are inclined. A second connecting block is provided between the first and third connecting blocks. The second connecting block is horizontal, and both ends of the second connecting block are hinged to the first and third connecting blocks respectively. The first, second, and third connecting blocks can form an isosceles trapezoid.

4. A uterine stent according to claim 3, characterized in that: First auxiliary support components are provided on both sides of the first movable block. The first auxiliary support components are in contact with the diaphragm and are used to support the diaphragm. The first auxiliary support component includes a second movable block, which is hinged to the first fixed block. The second movable block is inclined and U-shaped. Two sets of third movable blocks are hinged to the second movable block. The two sets of third movable blocks are horizontal and parallel. A fourth movable block is disposed between the two sets of third movable blocks. The sides of the fourth movable block are respectively in contact with the two sets of third movable blocks. A fifth movable block is hinged to the fourth movable block. The fifth movable block is inclined. A third fixed block is fixedly connected to the first movable block. The third fixed block is perpendicular to the first movable block. The fifth movable block is hinged to the third fixed block. The fourth movable block is provided with a first sliding groove, and the two sets of third movable blocks are each provided with a first sliding block on one side of each adjacent side. The two sets of first sliding blocks are respectively slidably locked onto the two sets of first sliding grooves.

5. A uterine stent according to claim 4, characterized in that: A second connecting rod is fixedly connected to the mating block. A second auxiliary support assembly is provided on both sides of the second connecting rod. The second auxiliary support assembly is in contact with the diaphragm and is used to lift the diaphragm. The second auxiliary support assembly includes a second movable rod, which is inclined. A first movable rod is fixedly connected to the second connecting rod. The first movable rod is perpendicular to the second connecting rod. One end of the second movable rod is hinged to the first movable rod, and the other end of the second movable rod is hinged to a third movable rod, which is horizontal. A fourth movable rod is provided on the right side of the third movable rod, and the third movable rod is parallel to the fourth movable rod. A second sliding block is fixedly connected to the third movable rod, and a second sliding groove is provided on the fourth movable rod. The second sliding block is slidably engaged in the second sliding groove.

6. A uterine stent according to claim 5, characterized in that: The first support mechanism is provided with a second support mechanism on both sides. The first support mechanism and the two sets of second support mechanisms are located in the same horizontal plane. A fixed frame is provided on the first movable block. A second airbag is fixed in the fixed frame. The second airbag is arc-shaped. The two ends of the second airbag are respectively in contact with the second connecting rods on the two sets of second support mechanisms. A second air supply pipe is connected to the fixed frame. Both ends of the fixed frame are fixedly connected to arc-shaped plates, which are arc-shaped. The second airbag is located between the two sets of arc-shaped plates, which are used to limit the position of the second airbag.

7. A uterine stent according to claim 6, characterized in that: The second auxiliary support component is connected to the first auxiliary support component, and the second auxiliary support component moves when the first auxiliary support component moves vertically. An arc-shaped frame is fixedly connected to the fourth movable block. The arc-shaped frame has a limit groove. A limit block is fixedly connected to the fourth movable rod. The limit block is slidably engaged in the limit groove.

8. A uterine stent according to claim 7, characterized in that: A first shaping mechanism is provided on both sides of the first fixing block. The first shaping mechanism includes a first support frame. A first arc-shaped block is fixedly connected to the first support frame. The first arc-shaped block is arc-shaped and contacts the diaphragm. A fixing seat is fixedly connected to the first fixing block. A second hinge seat is provided on the fixing seat. The first support frame is hinged to the second hinge seat. The fixed base is provided with a spring piece, the fixed end of the spring piece is fixed on the fixed base, and the elastic end of the spring piece is in contact with the first support frame; A first rope is fixedly connected to the first support frame, and a connecting seat is fixedly connected to the second fixing block. The first rope passes through the connecting seat, and the connection point between the first rope and the first support frame is located at the end away from the spring piece.

9. A uterine stent according to claim 8, characterized in that: The second connecting rod is provided with a detachable second shaping mechanism. The second shaping mechanism includes a second support frame. A second fixing block is fixedly connected to the second support frame. The second fixing block is arc-shaped and contacts the diaphragm. Two sets of second mating rods are fixedly connected to the second support frame. A second locking block is provided on the second mating rod. A second locking groove is opened on the second connecting rod. The second locking block is locked into the second locking groove. A second fixing block is fixedly connected to the first movable rod, and the second fixing block passes through the connecting seat.

10. A uterine stent according to claim 9, characterized in that: One set of the second connecting rods is provided with a clamping mechanism, which includes a first sealing strip and a second sealing strip. The first sealing strip and the second sealing strip are vertically distributed on the second connecting rod and are fixedly connected to the second connecting rod. The first sealing strip and the second sealing strip cooperate with each other and the first sealing strip can be fastened to the second sealing strip. A fixing groove is provided on the second connecting rod, and the fixing groove is located between the first sealing strip and the second sealing strip.

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