Simulation training teaching device for gynecological tumor brachytherapy

Abstract

The present invention discloses a simulation training and teaching device for brachytherapy of gynecological tumors, which relates to the technical field of gynecological simulation teaching, and includes a fixed mold; an organ component movably assembled in the fixed mold, including a uterus, a vagina and a vulva connected in sequence, wherein the vulva is snap-fitted and assembled on the fixed mold; a fluid storage bag arranged inside the uterus and used to simulate the tumor, which is filled with simulated plasma; and a circulation pump for conveying the simulated plasma. The simulation training and teaching device for brachytherapy of gynecological tumors simulates the touch of the tumor by storing fluid in the fluid storage bag, so that students can receive tactile feedback when holding the applicator, thereby improving clinical experience, and combined with the circulation process of the simulated plasma by the circulation pump, it can simulate a more realistic internal environment of the human body, further improving the experience gained by students through clinical teaching, and the organ components can be disassembled and reused, so the teaching cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of gynecological simulation teaching, and in particular to a gynecological tumor brachytherapy simulation training teaching device. Background Art

[0002] The gynecological tumor simulation teaching device is a device used for medical education and training. It aims to help medical students and professionals better understand and master the diagnosis, treatment and surgical techniques of gynecological tumors. It usually uses high-simulation materials and can realistically reproduce the anatomical structure of the female reproductive system, including the uterus, ovaries, fallopian tubes, etc.

[0003] In conjunction with the publication (announcement) number CN215987787U, the publication (announcement) date is 2022-03-08, and a multifunctional gynecological tumor examination teaching device is disclosed, including a base, an upper cover hinged to the base, a vulva component detachably mounted on the base, a rectal component, a uterine component, a ligament component and a superficial inguinal lymph node component are provided in the cavity between the upper cover and the base; the vulva component is connected to the uterine component through a vaginal component, a cervical component is provided at the connection between the uterine component and the vaginal component, and an accessory component is provided on one side of the uterine component; a simulated navel, a minimally invasive surgical instrument channel hole and an endoscope channel hole are provided on the upper cover, and the minimally invasive surgical instrument channel hole and the endoscope channel hole are connected to the cavity between the upper cover and the base.

[0004] However, in the prior art including the above-mentioned patent, the course of tumor is simulated by changing the disease simulation components, but the device is mainly composed of detachable models, which makes it difficult to simulate the internal environment of the human body with a certain temperature, affecting students' simulated clinical operations. Summary of the invention

[0005] The purpose of the present invention is to provide a gynecological tumor brachytherapy simulation training teaching device for solving the above problems.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a teaching device for gynecological tumor brachytherapy simulation training, comprising a fixed mold;

[0007] The organ assembly movably assembled in the fixed mold includes a uterus, a vagina and a vulva connected in sequence, wherein the vulva is snap-fitted and assembled on the fixed mold, and an elastic ring is arranged in the vulva, which has an inner wall surface and an outer wall surface arranged oppositely;

[0008] It also includes a first flow channel disposed on the uterus portion and a second flow channel disposed on the vagina portion;

[0009] A fluid reservoir arranged inside the uterus and used to simulate a tumor, wherein the reservoir is filled with simulated plasma;

[0010] Circulation pump for delivering simulated plasma.

[0011] Preferably, a connecting hose is fixedly provided on the uterus, and a cervical opening extending into the vagina to be in a reduced diameter state is fixedly provided at the end of the connecting hose, and a plurality of bends are provided in a circular array within the cervical opening.

[0012] Preferably, two ends of the return channel are connected to the first flow channel and the second flow channel respectively.

[0013] Preferably, it further comprises a socket on which a piston for blocking the first flow channel is movably provided, and a plug corresponding to the socket is fixedly provided at the first end of the vaginal part.

[0014] Preferably, the device further comprises a limiting ring which is coaxially sleeved on the vaginal part and is used for adjusting the diameter of the vaginal part.

[0015] Preferably, a fixing portion and a toggle ring are provided at the second end of the vaginal portion, and the toggle ring partially overlaps with the fixing portion to enclose and form a liquid storage cavity communicated with the second flow channel.

[0016] Preferably, the inner wall surface of the elastic ring includes an upper closing surface and a lower closing surface for clamping the outer wall of the vagina.

[0017] Preferably, the elastic ring further comprises a memory metal for reducing the angle of the outer wall surface.

[0018] Preferably, the upper closing surface and the lower closing surface have a horizontal state for maximizing the angle between the outer wall surfaces, and the upper closing surface and the lower closing surface are offset against each other in the horizontal state.

[0019] Preferably, the vaginal portion has a triggering station for releasing the horizontal state in its movable stroke, and the inner wall of the vulva under the triggering station is connected to the second flow channel.

[0020] In the above technical scheme, the present invention provides a teaching device for gynecological tumor close-range radiotherapy simulation training, which has the following beneficial effects: by storing fluid in the fluid storage bag to simulate the touch of the tumor, students can receive tactile feedback when holding the applicator, thereby improving clinical experience, and combined with the circulation process of simulated plasma by the circulation pump, a more realistic internal environment of the human body can be simulated, further improving the experience gained by students through clinical teaching, and the organ components can be disassembled and reused, so the teaching cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 An overall three-dimensional schematic diagram provided for an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the structure of an organ component provided by an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the connection positions of organ components provided in an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of a horizontal section of the uterus provided by an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of a vertical section of the uterus provided by an embodiment of the present invention;

[0027] Figure 6 The embodiment of the present invention provides Figure 5 A is a schematic diagram of the enlarged structure;

[0028] Figure 7 A schematic diagram of a vaginal section provided in an embodiment of the present invention;

[0029] Figure 8 The embodiment of the present invention provides Figure 6 Middle B is a schematic diagram of the enlarged structure;

[0030] Fig. 9 A schematic diagram of the structure of the vulva provided by an embodiment of the present invention;

[0031] Fig.10 A schematic diagram of the initial position of the assembled vaginal part and the vulva part provided in an embodiment of the present invention;

[0032] Fig.11 A schematic diagram of the vagina reaching the triggering station position provided by an embodiment of the present invention;

[0033] Fig.12 A schematic diagram of the end position of the assembled vaginal part and the vulva provided by an embodiment of the present invention;

[0034] Description of reference numerals:

[0035] 1. Fixed mold; 2. Uterus; 21. Connecting hose; 22. Cervical opening; 221. Hard surface; 222. Socket; 224. Return bend; 225. Infusion cavity; 226. Piston; 227. Socket; 228. Elastic member; 23. First flow channel; 24. Liquid storage bag; 3. Vulva; 31. Sealing ring; 32. Elastic ring; 33. Upper inclined plate; 34. Memory metal; 35. Lower Inclined plate; 36, upper closing surface; 37, lower closing surface; 38, sealing chamber; 39, film; 4, circulating pump; 41, infusion tube; 42, return tube; 5, vaginal part; 51, second flow channel; 511, plug; 512, side opening; 52, external thread; 53, limit ring; 54, fixing part; 55, toggle ring; 551, inclined surface; 56, bump; 57, liquid storage chamber; 58, snap ring. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] like Figure 1-12 As shown, a simulation training and teaching device for gynecological tumor brachytherapy includes a fixed mold 1;

[0038] The organ assembly movably assembled in the fixed mold 1 includes a uterus part 2, a vaginal part 5 and a vulva part 3 connected in sequence, wherein the vulva part 3 is snap-fitted and assembled on the fixed mold 1, and an elastic ring 32 is arranged in the vulva part 3, which has an inner wall surface and an outer wall surface arranged oppositely;

[0039] It also includes a first flow channel 23 disposed on the uterus portion 2 and a second flow channel 51 disposed on the vaginal portion 5;

[0040] A fluid storage bag 24 disposed inside the uterus 2 and used to simulate a tumor, wherein the fluid storage bag 24 is filled with simulated plasma;

[0041] A circulation pump 4 is used to transport simulated plasma.

[0042] Specifically, the fixed mold 1 is a model of the female lower abdomen to the lower body, and is cut along the midline for display, such as Figure 1 As shown, a chamber for accommodating organ components is provided in the fixed mold 1, and the outer shells of the uterus 2, the vaginal part 5, and the vulva 3 are all made of translucent plastic material, which is convenient for teaching demonstration and observation. The interior of the liquid storage bag 24 is a porous sponge-like structure, wherein the inner walls of the uterus 2 and the vaginal part 5 are made of silicone material to simulate the internal environment of the human body.

[0043] Furthermore, when in use, the uterus 2 and the vulva 3 are first clamped in the corresponding cavities on the fixed mold 1 respectively, and then the vaginal part 5 is inserted inward along the vulva 3, so that the first end of the vaginal part 5 extending inward is connected to the uterus 2, and the first flow channel 23 is connected to the second flow channel 51. At this time, the limit position of the insertion stroke of the vaginal part 5 is reached. At this limit position, the second end of the vaginal part 5 is located in the vulva 3, and is locked by the elastic ring 32 clamping the outer wall of the vaginal part 5.

[0044] After completing the assembly of the organ components, the circulation pump 4 is started, and the circulation pump 4 has a built-in heating unit for heating the simulated plasma. The circulation pump 4 has an infusion tube 41 for outputting the simulated plasma and a return tube 42 for withdrawing the simulated plasma, and the infusion tube 41 is connected to the first flow channel 23 of the uterine part 2. The simulated plasma flows through the first flow channel 23 to expand the liquid storage bag 24, and is then transported to the return tube 42 through the second flow channel 51 to simulate the circulation process of the blood vessels.

[0045] When students are conducting simulation teaching, they can place the simulated radiation source into the uterus 2 by holding the applicator and observe the shape and position of the fluid storage bag 24, which can simulate the touch of the applicator on the tumor and enhance the students' clinical experience.

[0046] In the above technology, the fluid storage bag 24 is filled with fluid to simulate the touch of the tumor, so that students can receive tactile feedback when holding the applicator, thereby enhancing their clinical experience. In addition, combined with the circulation process of the simulated plasma by the circulation pump 4, a more realistic internal environment of the human body can be simulated, further improving the experience gained by students through clinical teaching. In addition, the organ components can be disassembled and reused, and the teaching cost is relatively low.

[0047] As an embodiment further provided by the present invention, a connecting hose 21 is fixedly provided on the uterine part 2, and a cervical opening 22 extending into the vaginal part 5 to be in a reduced diameter state is fixedly provided at the end of the connecting hose 21, and a plurality of return bends 224 are opened in a circular array inside the cervical opening 22.

[0048] Specifically, the end surface of the cervical opening 22 facing the vaginal part 5 is in a bucket shape, and a hard surface 221 is fixedly provided on the end surface. The material of the cervical opening 22 except the hard surface 221 is a rubber material with a certain flexibility, and a recessed part 222 is also provided on the cervical opening 22, and the return bend 224 is correspondingly provided at the recessed part 222, and a clamping ring 58 is fixedly provided in the first end of the vaginal part 5. In the process of assembling the uterus part 2 and the vaginal part 5, the cervical opening 22 is extended and inserted into the vaginal part 5, at which time the hard surface 221 is squeezed and contracted by the clamping ring 58, so that the cervical opening 22 is restricted by the inner wall of the first end of the vaginal part 5 and is in a reduced diameter state, and the outer diameter of the cervical opening 22 in this state is smaller than the outer diameter of the cervical opening 22 when not plugged in. Then the position of the clamping ring 58 corresponds to the recessed part 222, so that the clamping ring 58 and the recessed part 222 are mutually clamped and locked.

[0049] After the liquid is passed into the first flow channel 23, the liquid in the first flow channel 23 enters the return channel 224, and the inner diameter of the return channel 224 expands due to the hydraulic pressure of the liquid, so that the socket-shaped portion 222 expands and squeezes the clamping ring 58, so that the cervical opening 22 and the vaginal portion 5 are tightly connected.

[0050] The connecting hose 21 can make the angle between the cervical opening 22 and the uterine part 2 more flexible, and can simulate the position of different human organs.

[0051] As another embodiment further provided by the present invention, two ends of the return channel 224 are respectively connected to the first flow channel 23 and the second flow channel 51.

[0052] Specifically, after assembling the uterine portion 2 and the vaginal portion 5, since the cervical opening 22 is in a reduced diameter state and the snap ring 58 and the socket-shaped portion 222 are locked with each other, the socket-shaped portion 222 is squeezed by the inner wall of the vaginal portion 5 and the snap ring 58 at the same time, making the return bend 224 relatively narrow. At this time, the liquid is passed, so that the simulated plasma is greatly hindered when flowing from the first flow channel 23 into the return bend 224. The simulated plasma will be partially retained in the first flow channel 23 and store liquid in the liquid storage bag 24, causing the liquid storage bag 24 to expand, and then enter the second flow channel 51 through the narrow return bend 224. The return bend 224 is expanded by the hydraulic action, further locking the snap ring 58 and the socket-shaped portion 222.

[0053] As another embodiment further provided by the present invention, it also includes a socket 227 on which a piston 226 for blocking the first flow channel 23 is movably provided, and a plug 511 corresponding to the socket 227 is fixedly provided at the first end of the vaginal part 5.

[0054] Specifically, the socket 227 is disposed in the socket-shaped portion 222 and faces the vaginal portion 5 , and further includes an infusion cavity 225 disposed at the end of the first flow channel 23 , and the socket 227 is communicated with the infusion cavity 225 . A plurality of elastic members 228 are arranged in an array on the inner circumference of the socket 227, and the elastic members 228 are used to make the piston 226 press against the port of the socket 227, so that in the default state, the liquid in the first flow channel 23 enters the infusion cavity 225 and is blocked by the piston 226, so that the infusion cavity 225 expands and drives the cervical opening 22 to expand. In the process of plugging in the vaginal part 5, the plug 511 of the vaginal part 5 is plugged along the socket 227 and pushes the piston 226, so that the piston 226 is staggered from the socket 227, and the simulated plasma is introduced into the second flow channel 51 through the plurality of side openings 512 opened on the side of the plug 511, so that only after the vaginal part 5 and the uterine part 2 are connected, the simulated plasma will enter the second flow channel 51 along the first flow channel 23 through the return bend 224, so as to avoid leakage caused by connecting the simulated plasma when not assembled.

[0055] As another embodiment further provided by the present invention, it also includes a limiting ring 53 which is coaxially sleeved on the vaginal part 5 and is used to adjust the diameter of the vaginal part 5 .

[0056] Specifically, the outer diameter length of the first end of the vaginal part 5 decreases toward the second end, forming a conical structure, and an external thread 52 is fixedly provided on the conical surface, and an internal thread corresponding to the external thread 52 is provided in the limiting ring 53. When the limiting ring 53 is close to the second end, the outer diameter of the first end of the vaginal part 5 is the largest, and during the rotation process toward the first end, the limiting ring 53 shrinks the outer diameter of the first end. This makes it smoother to insert the vaginal part 5 into the external vulva 3, and then the limiting ring 53 is rotated toward the second end to make the first end of the vaginal part 5 large enough for the cervical opening 22 to access, and then the outer diameter of the first end is shrunk, so as to strengthen the connection between the vaginal part 5 and the cervical opening 22, and the limiting ring 53 can be adjusted by hand deep into the fixed mold 1, which is more convenient.

[0057] As another embodiment further provided by the present invention, a fixing portion 54 and a toggle ring 55 are provided at the second end of the vaginal portion 5 , and the toggle ring 55 partially overlaps with the fixing portion 54 to enclose a liquid storage chamber 57 communicating with the second flow channel 51 .

[0058] Specifically, Fig.10 As shown, the toggle ring 55 is bent toward the axis at the second end of the vaginal part 5, wherein the outer wall of the bent part overlaps and tightly abuts against the inner wall of the fixed part 54, and the surface of the bent part exposed to the outside is a slope 551. By pressing the slope 551, the liquid storage chamber 57 can be opened, which facilitates the flushing of the liquid storage chamber 57 and prevents the simulated plasma from sticking to the inner wall of the liquid storage chamber 57 to form dirt.

[0059] As another embodiment further provided by the present invention, the inner wall surface of the elastic ring 32 includes an upper closing surface 36 and a lower closing surface 37 for clamping the outer wall of the vaginal part 5 .

[0060] Specifically, the outer wall surface of the elastic ring 32 is an upper inclined plate 33 and a lower inclined plate 35 which are fixedly connected to the upper closed surface 36 and the lower closed surface 37, respectively. Fig. 9 As shown, the cross section of the elastic ring 32 is triangular, and the longest side faces the axis. The triangular structure enables the upper inclined plate 33 and the lower inclined plate 35 to support the outer wall of the vaginal part 5, providing stable support, so that the vaginal part 5 can move along the axial direction.

[0061] As another embodiment further provided by the present invention, the elastic ring 32 further includes a memory metal 34 for reducing the angle of the outer wall surface.

[0062] Specifically, the elastic force of the memory metal 34 causes the upper inclined plate 33 and the lower inclined plate 35 to tend to approach each other, and this tendency force jointly applies force to the outer wall of the vaginal part 5, further playing a role of clamping and fixing, and the outer diameter of the fixing part 54 increases gradually along the second end direction, so that when the fixing part 54 extends into the fixed mold 1, the force between the outer wall of the fixing part 54 and the elastic ring 32 gradually increases.

[0063] As another embodiment further provided by the present invention, the upper closed surface 36 and the lower closed surface 37 have a horizontal state for maximizing the angle between the outer walls, and the upper closed surface 36 and the lower closed surface 37 are offset against each other in the horizontal state.

[0064] Specifically, a film 39 is connected between the upper closed surface 36 and the lower closed surface 37. In the initial state, the angle between the upper closed surface 36 and the lower closed surface 37 is a flat angle. At this time, the elastic force of the memory metal 34 drives the upper inclined plate 33 and the lower inclined plate 35 to deflect toward the film 39, so the upper closed surface 36 and the lower closed surface 37 are both squeezed toward the film 39 to offset each other. The squeezing pressure of the upper closed surface 36 and the lower closed surface 37 is a set of equal elastic forces provided by the memory metal 34 in opposite directions, so that the upper closed surface 36 and the lower closed surface 37 maintain a balanced and stable state. During the insertion of the vaginal portion 5, the first end of the vaginal portion 5 is restrained by the limiting ring 53 so that the outer diameter is smaller than the inner diameter of the elastic ring 32. Subsequently, the outer wall of the vaginal portion 5 exerts a certain force on the upper closing surface 36 and the lower closing surface 37. At this time, the balance between the upper closing surface 36 and the lower closing surface 37 is not destroyed, until the second end of the vaginal portion 5 is located in the elastic ring 32. At this time, the lower closing surface 37 is no longer subjected to the force of the outer wall of the vaginal portion 5, but the upper closing surface 36 is still subjected to the force and squeezed. At this time, the balance between the upper closing surface 36 and the lower closing surface 37 disappears, and the upper closing surface 36 is squeezed and turned toward the inside of the elastic ring 32, and the lower closing surface 37 turns synchronously. Fig.11 After losing the support of the upper closing surface 36 and the lower closing surface 37, the upper inclined plate 33 and the lower inclined plate 35 are moved closer under the action of the memory metal 34, and the lower inclined plate 35 deflects toward the axis and blocks the second end of the vaginal part 5, making it difficult for the vaginal part 5 to slide out.

[0065] As another embodiment further provided by the present invention, the vaginal portion 5 has a triggering position for releasing the horizontal state in its movable stroke, and the inner wall of the vulva 3 below the triggering position is connected to the second flow channel 51 .

[0066] Specifically, the inner wall of the vulva 3 is connected to the liquid return pipe 42, and a sealing ring 31 is provided at the port of the vulva 3 facing the interior of the fixed mold 1. After losing the support of the upper closing surface 36 and the lower closing surface 37, the upper inclined plate 33 and the lower inclined plate 35 are moved closer under the action of the memory metal 34. At this time, the end of the upper inclined plate 33 pushes the inclined surface 551 toward the axis, so that a channel is formed between the toggle ring 55 and the fixed part 54, as shown in FIG. Fig.12 As shown. The inner wall of the vulva 3 and the upper inclined plate 33 and the outer wall of the vagina 5 enclose a sealed cavity 38, and the liquid storage cavity 57 is connected to the sealed cavity 38, so that the simulated blood is drawn into the liquid return pipe 42 in the sealed cavity 38, and the sealing ring 31 is used to prevent the simulated blood from entering the fixed mold 1 along the outer wall of the vagina 5. After entering the liquid storage cavity 57, the simulated blood will first enter the bottom of the liquid storage cavity 57 near the second end along the liquid inlet direction, then flow back along the inner wall of the toggle ring 55, and then enter the sealed cavity 38 along the fixed part 54 and the toggle ring 55, wherein the liquid flow flowing back along the inner wall of the toggle ring 55 will automatically block the liquid flow entering the sealed cavity 38, so that the liquid flow enters the sealed cavity 38 slowly, and avoids the liquid flow from causing a large impact force on the sealed cavity 38, resulting in shaking between the vagina 5 and the vulva 3. And because the sealed cavity 38 is formed by the combination of the vagina 5 and the vulva 3, the inner wall is opened to the outside after disassembly, which is convenient for subsequent cleaning and use.

[0067] A protrusion 56 is fixedly provided at the second end of the vaginal portion 5. The fixed portion 54 and the toggle ring 55 form a groove for accommodating the protrusion 56 when they are in abutting state, so that when the vaginal portion 5 moves into the fixed mold 1, the protrusion 56 will squeeze the lower closing surface 37, so that the balance between the upper closing surface 36 and the lower closing surface 37 disappears, the upper closing surface 36 is squeezed and turned toward the inside of the elastic ring 32, and the lower closing surface 37 is turned synchronously and pressed against the second end of the vaginal portion 5, thereby further fixing the position of the vaginal portion 5.

[0068] Working principle: When in use, first clamp the uterus 2 and the vulva 3 in the corresponding cavities on the fixed mold 1 respectively, and then insert the vagina 5 inward along the vulva 3 so that the first end of the vagina 5 extending inward is connected to the uterus 2.

[0069] When the limiting ring 53 is close to the second end, the outer diameter of the first end of the vaginal part 5 is the largest. During the rotation process toward the first end, the limiting ring 53 shrinks the outer diameter of the first end. This makes it smoother to insert the vaginal part 5 into the external vulva 3. During the insertion process of the vaginal part 5, the first end of the vaginal part 5 is shrinked by the limiting ring 53 so that the outer diameter is smaller than the inner diameter of the elastic ring 32. Then, the outer wall of the vaginal part 5 exerts a certain force on the upper closed surface 36 and the lower closed surface 37. At this time, the balance between the upper closed surface 36 and the lower closed surface 37 is not destroyed. Until the second end of the vaginal part 5 is located in the elastic ring 32, the protrusion 56 will squeeze the lower closed surface 37. At this time, the balance between the upper closed surface 36 and the lower closed surface 37 disappears. The upper closed surface 36 is squeezed and turned toward the inside of the elastic ring 32. The lower closed surface 37 is synchronously turned and pressed against the second end of the vaginal part 5, further fixing the position of the vaginal part 5.

[0070] The end of the upper inclined plate 33 pushes the inclined surface 551 toward the axis, so that a channel appears between the toggle ring 55 and the fixing portion 54. Fig.12 The inner wall of the vulva 3, the upper inclined plate 33 and the outer wall of the vagina 5 form a sealed cavity 38, and the liquid storage cavity 57 is connected to the sealed cavity 38, so that the simulated blood is drawn into the liquid return pipe 42 in the sealed cavity 38, and the sealing ring 31 is used to prevent the simulated blood from entering the fixed mold 1 along the outer wall of the vagina 5.

[0071] The cervical opening 22 is extended and inserted into the vaginal part 5. At this time, the hard surface 221 is squeezed and contracted by the clamping ring 58, so that the cervical opening 22 is restricted by the inner wall of the first end of the vaginal part 5 and is in a reduced diameter state, so that the clamping ring 58 and the socket 222 are mutually locked. At this time, the socket 222 is squeezed by the inner wall of the vaginal part 5 and the clamping ring 58 at the same time, so that the return bend 224 is relatively narrow. At this time, the liquid is passed, so that the simulated plasma is greatly hindered when it flows from the first flow channel 23 into the return bend 224. The simulated plasma will be retained in the first flow channel 23 and store liquid in the liquid storage bag 24, so that the liquid storage bag 24 expands, and then enters the second flow channel 51 through the narrow return bend 224. The return bend 224 expands through the hydraulic action, and the clamping ring 58 and the socket 222 are further locked.

[0072] During the process of inserting the vaginal part 5, the plug 511 of the vaginal part 5 is inserted along the socket 227 and pushes the piston 226, so that the piston 226 and the socket 227 are staggered, and the simulated plasma is introduced into the second flow channel 51 through the multiple side openings 512 opened on the side of the plug 511, so that only after the vaginal part 5 and the uterine part 2 are connected, the simulated plasma will enter the second flow channel 51 along the first flow channel 23 through the return bend 224.

[0073] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A teaching device for gynecological tumor brachytherapy simulation training, characterized in that: It comprises a fixed mold (1); An organ component movably assembled in a fixed mold (1), comprising a uterus (2), a vagina (5) and a vulva (3) connected in sequence, wherein the vulva (3) is snap-fitted and assembled on the fixed mold (1), and an elastic ring (32) is arranged in the vulva (3), which has an inner wall surface and an outer wall surface arranged opposite to each other; It also includes a first flow channel (23) arranged on the uterine part (2) and a second flow channel (51) arranged on the vaginal part (5); A fluid storage bag (24) disposed inside the uterus (2) and used to simulate a tumor, wherein the fluid storage bag (24) is filled with simulated plasma; A circulation pump (4) is used to transport simulated plasma.

2. The gynecological tumor brachytherapy simulation training and teaching device according to claim 1 is characterized in that: The uterus (2) is fixedly provided with a connecting hose (21), and the end of the connecting hose (21) is fixedly provided with a cervical opening (22) extending into the vagina (5) to be in a reduced diameter state, and a plurality of return bends (224) are arranged in an array in a circular circle inside the cervical opening (22).

3. The gynecological tumor brachytherapy simulation training and teaching device according to claim 2 is characterized in that: The two ends of the return bend (224) are respectively connected to the first flow channel (23) and the second flow channel (51).

4. The gynecological tumor brachytherapy simulation training and teaching device according to claim 1 is characterized in that: It also includes a socket (227) on which a piston (226) for blocking the first flow channel (23) is movably arranged, and a plug (511) corresponding to the socket (227) is fixedly arranged at the first end of the vaginal part (5).

5. The gynecological tumor brachytherapy simulation training and teaching device according to claim 1 is characterized in that: It also comprises a limiting ring (53) which is coaxially sleeved on the vaginal part (5) and is used to adjust the diameter of the vaginal part (5).

6. The gynecological tumor brachytherapy simulation training and teaching device according to claim 1 is characterized in that: The second end of the vaginal portion (5) is provided with a fixing portion (54) and a toggle ring (55), and the toggle ring (55) partially overlaps with the fixing portion (54) to enclose a liquid storage chamber (57) that is in communication with the second flow channel (51).

7. The gynecological tumor brachytherapy simulation training and teaching device according to claim 1 is characterized in that: The inner wall surface of the elastic ring (32) comprises an upper closing surface (36) and a lower closing surface (37) for clamping the outer wall of the vaginal part (5).

8. The gynecological tumor brachytherapy simulation training and teaching device according to claim 1 is characterized in that: The elastic ring (32) also includes a memory metal (34) for reducing the angle of the outer wall surface.

9. The gynecological tumor brachytherapy simulation training and teaching device according to claim 7, characterized in that: The upper closed surface (36) and the lower closed surface (37) have a horizontal state for maximizing the angle between the outer wall surfaces, and the upper closed surface (36) and the lower closed surface (37) are opposed to each other in the horizontal state.

10. The gynecological tumor brachytherapy simulation training and teaching device according to claim 9, characterized in that: The vaginal part (5) has a triggering position for releasing the horizontal state in its moving stroke, and the inner wall of the vulva (3) below the triggering position is connected to the second flow channel (51).

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