Intelligent ultrasonic-guided postpartum hemorrhage balloon filling hemostasis training equipment

Abstract

A postpartum hemorrhage balloon packing hemostasis training device under intelligent ultrasonic guidance comprises a high-simulation puerpera model, a microcomputer intelligent controller, a postpartum uterus blood circulation device, an air injection-air exhaust and water injection-water pumping device, a uterine cavity packing hemostasis balloon, a vagina balloon and a high-simulation simulation puerpera model. Organic glue similar to human tissue ultrasonic impedance characteristics and density is adopted, blood circulation is automatically formed by uterine wall blood vessels in a mold, an ultrasonic probe of an ultrasonic diagnostic apparatus is used for scanning, a display screen can be loaded to display color Doppler dynamic blood flow images, and meanwhile vaginal blood flow and blood flow velocity observation tube blood flow can be seen by naked eyes. The microcomputer intelligent controller intelligently controls naked eye bleeding and dynamic blood flow images to synchronously attenuate and then stop, the simulation effect is vivid, the system is used for medical colleges and hospitals, and the postpartum hemorrhage uterine cavity filling hemostasis skill training and examination quality is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical education equipment, in particular to an intelligent ultrasound-guided intrauterine balloon tamponade hemostasis training device. Background Art

[0002] Postpartum uterine bleeding is a severe disease. If the rescue is not timely, it may lead to the death of the parturient. The traditional method of hemostasis is to use uterine cavity gauze packing, but the operation method is relatively slow and sometimes the hemostasis is not complete. In recent years, some obstetric departments of hospitals in the world have used balloons to compress the uterine cavity to stop bleeding, and have achieved good results. For example, Li Yao. Study on the nursing method and effect of Foley catheter balloon uterine cavity compression for cesarean scar pregnancy bleeding. Chinese Journal of Modern Drug Application. 2019, (2). DOI: 10.14164 / j.cnki.cn11-5581 / r.2019.02.033. Postpartum hemorrhage endangers the life of the parturient, and hemostasis must be carried out every minute. However, the rescue of parturients with postpartum uterine bleeding must be skilled. Any carelessness will lead to rescue failure and easily cause medical disputes. Therefore, it is necessary to provide skills training for obstetric technicians. The traditional training method is for senior technicians to teach, help and guide trainees in the practice of rescuing postpartum hemorrhage. However, parturients and their families often refuse to allow inexperienced medical staff and medical students to perform the operation, and trainees rarely have the opportunity to actually perform the operation. Recently, the national health and health authorities issued the "Notice on the Opinions on the Construction of Provincial Maternal and Child Health Practices", requiring the provision of ultrasound-guided uterine tamponade models, the promotion of ultrasound-guided uterine tamponade for postpartum hemorrhage, and the further improvement of the success rate of postpartum hemorrhage rescue. The ultrasound-guided uterine balloon tamponade training equipment is blank in the world's medical obstetrics education equipment, which seriously affects the training and improvement of obstetric technical personnel. Therefore, it is very necessary to develop an intelligent ultrasound-guided postpartum hemorrhage uterine balloon tamponade hemostasis training equipment. . Summary of the invention

[0003] The purpose of the invention is to provide a training device for postpartum hemorrhage intrauterine balloon tamponade hemostasis under intelligent ultrasound guidance. Using a highly simulated maternal model, operators use the probe of any clinical color ultrasound diagnostic instrument to conduct intelligent postpartum hemorrhage balloon tamponade hemostasis skill training under ultrasound guidance, which significantly improves the training effect.

[0004] The invention solves the problem of lack of skill training and assessment equipment for ultrasound-guided balloon tamponade hemostasis for obstetric professionals, filling the gap in medical education equipment. It is the world's first intelligent ultrasound-guided intrauterine balloon tamponade hemostasis training equipment.

[0005] An intelligent training device for balloon tamponade hemostasis in postpartum hemorrhage under ultrasonic guidance, comprising: a highly simulated parturient model, a microcomputer intelligent controller, a blood circulation device, an air injection - air extraction and water injection - water extraction device; an intrauterine tamponade hemostasis balloon and a vaginal balloon, characterized in that: the simulated parturient model (1) is made of an organic glue similar to the ultrasonic acoustic impedance characteristics and density of human tissues, formed in a mold according to the operation routine, and has a soft and elastic skin - subcutaneous tissue (2). The inner lining skeleton is provided with a simulated head and neck (3), a chest (4), and an abdomen - pelvis (5) which is provided with a simulated postpartum hemorrhage uterus (6), connected to the cervix (7), and below it is the vagina (8), and the vulva is provided with a vaginal orifice (9); the postpartum hemorrhage uterus (6) is connected to several uterine wall blood vessels (11) through a blood input tube (10), and converges into a uterine wall blood return tube (12). The microcomputer intelligent controller has a power switch (K) with an indicator light on the controller chassis panel (13), and a liquid crystal touch screen (14) is set. This screen is provided with an audio - visual explanation key (k1), an intelligent voice control key (k2), a blood circulation key (K1), a vaginal bleeding key (K2), a bleeding observation key (K3), an air injection key (K4), an air extraction key (K5), a water injection key (K6), an air extraction key (K7), a reset key (K8), an analog pressure gauge (YL), and a miniature electret microphone (15) and a speaker (16) are also set. On one side (13’) of the chassis (13), a power cord (AC220V), a cable (17), a temperature control probe wire (WKX), and an intrauterine balloon pressure detection tube (19) are also set; inside the controller chassis (13), a rectifier power supply (DC) is provided, and a skill training guidance audio - visual explanation data module (20) is connected to the speaker (Y), and a non - specific voice intelligent voice control module (21) that stores voice control instructions with the same functions as the touch screen buttons is connected to the electret microphone (HT) and the speaker (Y); a 0 - 300 mmHg pressure sensor (22) communicated with the pressure detection tube (19) is set, and the signal wire (XHX) of this sensor is connected to a microcomputer programming control module (23), and this module is connected to the electrical equipment arranged in the chest (4) body cavity of the highly simulated parturient model (1) through a cable (24).The blood circulation device is provided with a blood storage bottle (25) in the body cavity of the chest (4) of the simulated parturient model. The bottle is provided with a simulated blood injection tube (26) with a one-way valve (DF-1) and an overflow tube (27) leading to the outside of the simulated parturient model (1). The input tube (29) of the micro blood pump (28) is connected to the blood storage bottle (25). The output tube (30) of the blood pump is divided into two paths through the first three-way tube (ST-1). The first path is connected to the blood input tube (10) of the uterine wall. The second path is connected to the flow regulating valve (TF) through a catheter and then connected to the second three-way (ST-2). One end of the three-way is connected to the first electromagnetic valve (F-1) through a catheter and leads into the vagina (8) through the simulated vaginal blood flow tube (31). The outlet of the vagina (9) is connected to the simulated blood collection bottle (32). The lower end of the tube is folded back into the model and connected to the blood storage bottle (25) through the blood flow return tube (34). The probe TT of the color diagnostic instrument CSY is used to scan the uterine area of more than 5 uterine wall blood vessels 11 in the abdomen-pelvis, and the color Doppler dynamic blood flow image (TX) can be presented on the display screen (XSP).The gas injection - air extraction and water injection - water extraction device is arranged in the chest (4) body cavity. The micro air pump (35) of the gas injection - air extraction device is connected to the A end of the third three - way pipe (ST - 3) through the balloon gas injection pipe (36) via the third electromagnetic valve (F - 3). The micro vacuum pump (37) is connected to the B end of the third three - way pipe (20 - 3) through the balloon air extraction pipe (38) via the fourth electromagnetic valve (F - 4). The C end of this three - way pipe is connected to the balloon gas injection - air extraction pipe (39) which extends out of the high - fidelity maternal model (1). The water injection - water extraction device is a water storage tank (40), equipped with a water injection pipe (41) with a one - way valve (DF - 2) and an overflow pipe (YL), both leading to the outside of the high - fidelity maternal model (1). This water storage tank is connected to the liquid level gauge (YW) outside the high - fidelity maternal model (1). An electric heating pipe (R) and a temperature sensor probe (WTT) are arranged in the water storage tank (40). This water tank is connected to the input pipe (42’) of the micro water injection pump (42). The upper output pipe (43) of this pump is connected to the fifth electromagnetic valve (F - 5) and then connected to the A end of the fourth three - way pipe (ST - 4) through the balloon water injection pipe (44). The output pipe (46) of the micro water extraction pump (45) is connected to the water storage tank (40) through the water return pipe (47). The input pipe (48) of this water extraction pump is connected to the balloon water extraction pipe (49) via the sixth electromagnetic valve (F - 6), connecting to the B end of the three - way pipe. The C end of this three - way pipe is connected to the balloon water injection - water extraction pipe (50) which extends out of the high - fidelity maternal model (1). The intrauterine packing gas - injection hemostatic balloon (51) is a slightly smaller than the uterine cavity volume inverted pear - shaped sac. The lower end neck is connected to the balloon connecting pipe (52), which is connected to the fifth three - way pipe (ST - 5). One end of this three - way pipe is connected to the balloon gas injection - air extraction pipe (39), and the other end is connected to the pressure detection pipe (19). The intrauterine packing water - injection hemostatic balloon (53) has a central pipe (54) arranged at the center of the intrauterine balloon. The upper end is communicated with the uterine cavity, and the lower end is connected to the negative pressure suction tank (55). A drainage discharge plug (56) is arranged at the bottom of the tank. The connecting pipe (57) at the neck of the intrauterine balloon is communicated with this balloon (53). The lower end of the connecting pipe (58) at the neck of the intrauterine balloon is connected to the third three - way pipe (20 - 6). The side end of this three - way pipe is connected to the pressure detection pipe (19), which is connected to the pressure sensor (YL) of the chassis (13) and then connected to the microcomputer programming control module (21). This module is connected to the micro - circulating blood pump (28), micro air pump (35), micro vacuum pump (37), micro water injection pump (41), and micro water extraction pump (45) through signal lines via their respective relays (J1, J2, J3, J4). For manual intrauterine balloon packing hemostasis training, injecting gas into the intrauterine balloon can also use a manual gas injection device, such as a rubber ball of a sphygmomanometer (63) or a balloon pump (64). Injecting water into the intrauterine balloon can use a rubber ball enema (65) or a plastic pull - type enema (66). It can also use a 100 / 150 ml syringe connected to a three - way pipe with two one - way valves (DF) to make an injection - type manual pump (67), which is ultimately also connected to the pressure detection pipe (19).Medical gauze / hemostatic gauze (68) is on the outer layer of the balloon wall of the intrauterine packing gas-inflated hemostatic balloon (51) or the intrauterine packing water-inflated hemostatic balloon (53). The vaginal balloon (69) is communicated with the connecting tube (70) at the neck of the vaginal balloon, and is connected to the blood pressure meter inflating rubber ball (63’) through the inflation catheter (71).

[0006] The advantages and beneficial effects of the present invention are as follows: The structure is reasonable, and the operation is completely intelligent. After starting up, by operating the touch keys on the liquid crystal touch screen or issuing voice control instructions identical to the touch keys, the intelligent high-fidelity simulation of the postpartum hemorrhage scenario can be realized: Simulating blood flowing out of the vagina, and the bleeding speed can be observed through the bleeding speed observation tube. The trainees use any model of color ultrasonic diagnostic instrument in clinical practice, and scan the uterine area of the simulated parturient's abdomen with the probe. On the ultrasonic display screen, a color blood flow image indicating postpartum hemorrhage can be seen. Inject gas / water into the balloon packed in the uterine cavity until the rated pressure is reached. At the same time, the color blood flow image becomes slower and smaller and completely stops within a few seconds. The vaginal bleeding and the bleeding in the bleeding speed observation tube stop. The simulation effect is very realistic, which can significantly improve the training effect of the intrauterine packing hemostasis technique under ultrasonic guidance. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the overall structure of the present invention Figure 2 It is a schematic diagram of the high-fidelity parturient model and the connection structure of the present invention Figure 3 It is a schematic diagram of the structure of the uterine blood circulation device of the present invention Figure 4 It is a schematic diagram of the structure of the automatic gas injection / extraction device of the present invention Figure 5 It is a schematic diagram of the automatic water injection / water extraction device of the present invention Figure 6 It is a schematic diagram of the structure of the manual gas injection / extraction, water injection / water extraction device of the present invention Figure 7 It is a schematic diagram of the external structure of the microcomputer controller chassis of the present invention Figure 8 It is a schematic diagram of the principle of the intelligent control circuit of the present invention DETAILED DESCRIPTION OF THE INVENTION

[0008] The present invention manufactures molds for corresponding tissues and organs of the simulated parturient model 1. The skin-subcutaneous tissue 2, postpartum hemorrhage uterus 5, cervix 6, vagina 7, and vulva 8 of the simulated parturient model 1 are formed by using an organic glue mold with basically the same tissue density and acoustic impedance characteristics as real human tissues. In this embodiment, liquid silicone rubber is used to form in the mold according to the operation routine. The inner lining skeleton of the model is formed by hard PVC injection molding. The uterine wall simulated blood input tube 10, uterine wall simulated blood vessel 11, simulated blood return tube 12, and various catheters are made of silicone rubber tubes. Other components are available in the market. The micro blood pump 28 is 12V 5W 2L / min; the chip of the microcomputer programming control module MK uses a 51 single-chip microcomputer. The pressure sensor YL is 0 - 300 mmHg, and the liquid crystal touch screen YJP is 7 / 8 inches. The intrauterine packing inflation hemostatic balloon 51, intrauterine packing water injection hemostatic balloon 53, and vaginal balloon are made of natural latex. The simulated blood is made by stirring 1000 ml of pure water with 1 g of animal blood powder, red pigment, and sodium benzoate evenly. Prepare all kinds of components and assemble them according to the instructions with reference to the accompanying drawings of the instructions. After debugging, it can be used. First, do the preparatory work: When in use, place the color ultrasonic diagnostic instrument beside the experimental table, or place the portable ultrasonic diagnostic instrument on the experimental table. Place the simulated postpartum pregnant and lying-in woman model 1, microcomputer controller chassis 13, intrauterine packing inflation hemostatic balloon 51, intrauterine packing water injection hemostatic balloon 53, medical gauze 68, and manual inflation / water injection device, simulated disinfected items, etc. on the experimental table. Insert the AC220V power plug of the chassis 13 into the power socket, and power on the microcomputer controller. Then, make various pipeline connections. When conducting the skill training assessment of postpartum hemorrhage gauze-balloon packing hemostasis, use a large syringe to draw the simulated blood and inject it through the injection tube 21 of the blood storage bottle 25 until the simulated blood drips out from the overflow tube 27, indicating that it is full. Further, to simulate postpartum hemorrhage, press the power on / off key K on the chassis panel, the indicator light lights up. After waking up the intelligent non-specific voice control module, issue the voice command "blood circulation" or press the "blood circulation key" K1 on the liquid crystal touch screen YJP of the chassis panel 13, the indicator light lights up, and the micro blood pump 28 runs. According to the training needs, issue the voice control command "vaginal bleeding", "observe bleeding speed" or press the vaginal bleeding key K2, observe bleeding speed key K3. The pump draws the simulated blood from the input end 29 through the blood storage bottle 11, the blood flows through the output end of the pump, through the simulated blood output tube 30, and into the tee ST-1 connected to the uterine wall simulated blood input tube 10 of the simulated parturient model 1. The blood flow divides into two. The first blood path leads into multiple uterine wall simulated blood vessels 11, and through the simulated blood return tube 12, the blood returns to the blood storage bottle 11; the second blood path adjusts the blood flow rate to 60 - 100 drops / min through the flow regulating valve TF. The simulated blood passes through the first electromagnetic valve F-1 that is powered on and flows into the vagina 8 through the vaginal blood vessel 31. The trainees can visually see the simulated blood flowing out at the vaginal orifice 9 and can flow into the blood collection container 32 for repeated use.When the second electromagnetic valve F-2 that is turned on by power supply allows inflow, the "bleeding speed observation tube 34" can observe that there are constantly dozens of drops of simulated blood flowing per minute. The lower end of this tube flows back to the blood storage bottle 25 through the connected second blood return tube 34. Using the ultrasonic probe TT of the color ultrasonic diagnostic instrument CSY, select the ultrasonic Doppler blood flow key, and routinely scan the simulated uterine area of the simulated parturient model 1. On the ultrasonic liquid crystal display XSP, a color ultrasonic Doppler blood flow dynamic image TX can be seen, which implies the scenario of postpartum hemorrhage. Further, conduct the skill training of the automatic inflation and pressurization hemostasis technique for intrauterine balloon packing: First, place the intrauterine gauze-balloon. The method is to use an oval forceps to hold the intrauterine packing inflation balloon 51 coated with an antibacterial liquid medicine, attached with 1 layer of medical gauze 68 or hemostatic gauze, and place it into the uterine cavity of the simulated postpartum bleeding uterus 6. The connecting tube at the neck of the intrauterine balloon is properly connected to the air injection - extraction tube 39. Place the vaginal balloon 69 into the vagina 8 and use a rubber ball to inflate and pressurize 8 - 10 times to block the vagina to prevent the intrauterine balloon from prolapsing after pressurization. Connect the pressure detection tube to the microcomputer controller chassis. One of the advantages of using gauze packing in the uterine cavity for postpartum hemorrhage in obstetric clinics is that the surface of the gauze is rough, and the blood contacting the uterine wall is easily activated to promote blood coagulation; issue the voice control command "inject air" or press the air injection key K4 on the chassis panel 13, and the micro air pump 35 operates. Through the air injection tube of the pump and the opened air injection electromagnetic valve, air is injected into the intrauterine packing inflation hemostatic balloon 50 placed in the uterine cavity. At the same time, through the connected second three-way valve ST-2, the pressure value of the 0 - 300 mmHg pressure sensor YL that enters the microcomputer controller chassis through the pressure detection tube 19 is displayed in real time on the analog pressure gauge YLJ of the liquid crystal display XSP. The uterine contraction pressure during normal delivery is 100 - 150 mmHg. When the pressure in the balloon reaches the normal pressure average value of 125 mmHg, the microcomputer programming control module issues a power-off command to the micro air pump to stop the pump from operating. At the same time, it issues a deceleration command to the microcirculation blood pump, reducing the blood pumping. Visually, the vaginal bleeding and the blood flow drop rate in the bleeding speed observation tube slow down, and the color Doppler dynamic blood flow image synchronously attenuates. After a few seconds, the module issues a power-off command to the blood pump again to stop the blood pump from operating, and the visible bleeding stops. At the same time, the dynamic blood flow image on the ultrasonic liquid crystal display disappears; through the above intelligent automatic control of inflating and pressurizing the intrauterine balloon for hemostasis, the trainees can visually observe that the simulated bleeding at the vaginal orifice 6 of the parturient and the bleeding observation tube 36 gradually slows down until it stops. This marks the success of the automatic inflation and pressurization hemostasis of intrauterine balloon packing, and the skill training assessment result is qualified. Issue the voice control command "extract air" or press the "extract air" key, and the vacuum pump 37 operates. Through the opened extraction electromagnetic valve F-4, air is extracted from the balloon. After experiencing a set of dozens of seconds, the microcomputer programming control module issues a power-off command to the vacuum pump 37, and the pump stops operating. Release the air in the vaginal balloon 69 through the rubber ball valve, and take out the evacuated intrauterine inflation balloon.Further, perform the skill training of the automatic water injection and pressurization hemostasis technique using an intrauterine balloon tamponade: Issue a voice control command of "reset" and use a micro submersible pump or a large syringe to draw simulated normal saline and inject it into the water injection pipe of the water storage tank 40 until water droplets drip out from the overflow pipe. Operate the microcomputer controller panel to set the temperature of the temperature controller to 38 °C. Issue a voice control command of "reset" or press the "reset" button, and the microcomputer programming module returns to the initial state. Place the water injection intrauterine balloon in the uterine cavity, and properly connect the connecting pipe 57 at the neck of the intrauterine balloon to the water injection - water extraction pipe 39. Place the vaginal balloon 69 in the vagina 8 and inflate and pressurize it in the same manner as described above. Connect the pressure detection pipe 19 to the microcomputer controller chassis 13. Issue a voice control command of "water injection" or press the "water injection" button, and the micro injection pump 41 draws simulated normal saline from the water tank 40 and continuously injects it into the uterine cavity hemostasis balloon 53 through the energized and opened water injection solenoid valve F5, the water injection - water extraction pipe 39, and the intrauterine balloon connecting pipe 57. The pressure inside the balloon continuously increases and enters the microcomputer controller chassis 13 through the pressure detection pipe 19. The pressure value of the 0 - 300 mmHg pressure sensor YLQ is displayed in real - time on the analog pressure gauge YLJ of the liquid crystal display XSP. When the pressure in the balloon reaches the average value of the uterine pressure during normal childbirth, which is 125 mmHg, the microcomputer programming control module issues a power - off command to the micro injection pump 41 to stop the pump. At the same time, it issues a deceleration command to the microcirculation blood pump 28, reducing the blood pumping. Visually, the vaginal bleeding and the blood flow in the bleeding speed observation pipe slow down, and the color Doppler dynamic blood flow image TX synchronously attenuates. After a few seconds, the module issues a power - off command to this blood pump to stop it, and the visible bleeding stops and the dynamic blood flow image disappears simultaneously; Issue a voice control command of "water extraction" or press the "water extraction" button, and the micro water extraction pump 45 operates to extract simulated normal saline from the uterine cavity hemostasis balloon 53 through the opened water extraction solenoid valve F6. After a set of dozens of seconds, the microcomputer control module issues a power - off command to the micro water extraction pump, and the pump stops operating. Through the above intelligent automatic control of inflating and pressurizing the intrauterine balloon and injecting water for pressurized hemostasis, the trainee can visually observe that the simulated bleeding at the maternal vaginal orifice 9, the bleeding observation pipe 36, and the ultrasonic dynamic blood flow image TX gradually slows down until it stops. This indicates the success of the automatic air - injection and pressurization hemostasis using an intrauterine balloon tamponade. At this time, issue a voice control command of "reset" or press the "reset button" K8, and the microcomputer intelligent programming control returns to the initial state. To simulate the clinical rescue of postpartum hemorrhage in obstetrics, a "practical drill" can be carried out.Using a manual gas / liquid injection device, when injecting gas into the intrauterine balloon with a rubber bulb 63 for inflating a sphygmomanometer or a syringe-type manual pump 67, it is connected to the connecting tube of the intrauterine balloon. When injecting liquid into the intrauterine balloon, a rubber bulb enema 65 or a plastic pull-type enema 66 is used. An artificial liquid injection device such as an air-liquid injector 67 made by connecting a 100 / 150 ml syringe / enema to a three-way valve and two one-way valves DF can also be used. Simulated normal saline is extracted from the container and continuously injected into the balloon through the connecting tube 58 of the intrauterine balloon. When the air pressure / water pressure in the balloon reaches 125 mmHg, through the above intelligent automatic control, the visual postpartum hemorrhage stops and the color Doppler dynamic blood flow image attenuates and stops. The air in the vaginal balloon is released through the rubber bulb valve, and the evacuated intrauterine balloon is removed. The exudate between the balloon and the uterine wall can be aspirated through the central tube 54 of the balloon by the negative pressure suction tank 55. When there is too much, the plug can be discharged and reused after disinfection. In order to simulate the clinical rescue of postpartum hemorrhage in obstetrics, "practical drills" can be carried out. Using a manual gas / liquid injection device, when injecting gas into the intrauterine balloon, a rubber bulb 63 for inflating a sphygmomanometer or a syringe-type manual pump is connected to the corresponding connecting tube 58 of the intrauterine balloon. When injecting liquid into the intrauterine balloon, a rubber bulb enema 65 or a plastic pull-type enema 66 is used. An artificial liquid injection device such as an air-liquid injector made by connecting a 100 / 150 ml syringe / enema to a three-way valve and two one-way valves DF can also be used. Simulated normal saline is extracted from the container and continuously injected into the balloon through the connecting tube 58 of the intrauterine balloon. When the air pressure / water pressure in the balloon reaches 125 mmHg, through the above intelligent automatic control, the visual postpartum hemorrhage stops and the color Doppler dynamic blood flow image attenuates and stops. Assessment method: When the trainee conducts the training of intrauterine packing hemostasis under ultrasonic guidance, if the visual observation and the ultrasonic Doppler blood flow image show that the bleeding has stopped, it indicates that the operation is correct and the skill assessment result is qualified.

Claims

1. An intelligent training device for balloon tamponade hemostasis in postpartum hemorrhage under ultrasonic guidance, comprising: High-fidelity maternal models, microcomputer intelligent controllers, postpartum uterine blood circulation devices, air injection - air extraction and water injection - water extraction devices; Intrauterine packing hemostatic balloon and vaginal balloon, high-fidelity maternal model, using organic glue similar to the ultrasonic acoustic impedance characteristics and density of human tissues, formed in a mold, with automatic blood circulation formed in the uterine wall blood vessels. Scanned by the ultrasonic probe of an ultrasonic diagnostic instrument, it can be equipped with a display screen to display color Doppler dynamic blood flow images. At the same time, vaginal bleeding and blood flow through the blood flow observation tube can be visually observed. By injecting water or gas into the intrauterine balloon to compress the uterine wall blood vessels to reach the rated pressure, through the intelligent control of the microcomputer intelligent controller, the visual bleeding and the dynamic blood flow image synchronously attenuate and then stop. The simulation effect is realistic and is used in medical colleges and hospitals, significantly improving the training and assessment quality of the intrauterine packing hemostatic skill for postpartum hemorrhage. It includes: high-fidelity maternal model, microcomputer intelligent controller, blood circulation device, air injection - air extraction and water injection - water extraction devices; intrauterine packing hemostatic balloon and vaginal balloon. It is characterized in that: the simulated maternal model (1) uses organic glue similar to the ultrasonic acoustic impedance characteristics and density of human tissues, formed in a mold according to the operation routine, and has a soft and elastic skin - subcutaneous tissue (2). The inner lining skeleton is provided with a simulated head and neck (3), chest (4), and the abdomen - pelvis (5) is provided with a simulated postpartum hemorrhage uterus (6), connected to the cervix (7), and below it is the vagina (8), and the vulva is provided with a vaginal orifice (9); the postpartum hemorrhage uterus (6) is connected to several uterine wall blood vessels (11) through a blood input tube (10), and converges into a uterine wall blood return tube (12). The microcomputer intelligent controller has a power switch (K) with an indicator light on the controller chassis panel (13), and a liquid crystal touch screen (14) is set. This screen is provided with an audio - visual explanation key (k1), intelligent voice control key (k2), blood circulation key (K1), vaginal bleeding key (K2), bleeding observation key (K3), air injection key (K4), air extraction key (K5), water injection key (K6), air extraction key (K7), reset key (K8), analog pressure gauge (YL), and also a miniature electret microphone (15), speaker (16), temperature controller (WKQ). On one side (13’) of the chassis (13), a power cord (AC220V), cable (17), temperature control probe wire (WKX), and intrauterine balloon pressure detection tube (19) are also provided; inside the controller chassis (13), a rectified power supply (DC) is provided, and a skill training guidance audio - visual explanation data module (20) is connected to the speaker (Y), and a non - specific voice intelligent voice control module (21) that stores voice control instructions with the same functions as the touch screen buttons is connected, connecting the electret microphone (HT) and the speaker (Y); a 0 - 300 mmHg pressure sensor (22) connected to the pressure detection tube (19) is set, and the signal wire (XHX) of this sensor is connected to a microcomputer programming control module (23), and this module is connected to the electrical equipment set in the chest cavity (4) of the high - fidelity maternal model (1) through a cable (24).

2. The training device for balloon tamponade hemostasis in postpartum hemorrhage under intelligent ultrasound guidance according to claim 1, wherein: The postpartum uterine blood circulation device comprises a blood storage bottle (25) arranged in the body cavity of the chest (4) of a simulated parturient model, the bottle being provided with a simulated blood injection tube (26) with a one-way valve (DF-1) and an overflow tube (27) leading to the outside of the simulated parturient model (1); an input tube (29) of a micro blood pump (28) is connected to the blood storage bottle (25); an output tube (30) of the blood pump is divided into two paths via a first three-way tube (ST-1); the first path is connected to the blood input tube (10) of the uterine wall; the second path is connected to a flow regulating valve (TF) via a catheter and then connected to a second three-way tube (ST-2); one end of the three-way tube is connected to a first electromagnetic valve (F-1) via a catheter. -1) through a simulated vaginal blood flow tube (31) into the vagina (8), the vaginal opening (9) is connected to a simulated blood collection bottle (32); the lower end of the tube is folded back into the model and connected to a blood storage bottle (25) through a blood return tube (34); the probe TT of a color diagnostic instrument CSY is used to scan the uterine area of ​​the abdomen-pelvis (5), and a color Doppler dynamic blood flow image (TX) can be displayed on a display screen (XSP).

3. According to the intelligent ultrasound-guided balloon tamponade hemostasis training device of claim 1, the gas injection-exhaust and water injection-exhaust devices are arranged in the chest (4) body cavity, the micro air pump (35) of the gas injection-exhaust device is connected to the A end of the third three-way pipe (ST-3) through the balloon gas injection pipe (36) through the third solenoid valve (F-3), and the micro vacuum pump (37) is connected to the A end of the third three-way pipe (ST-3) through the balloon gas extraction pipe (38) through the fourth solenoid valve (F-3). 4) connecting the B end of the third three-way pipe (20-3), the C end of the three-way pipe being connected to the balloon gas injection-exhaust pipe (39) extending out of the highly realistic parturient model (1); the water injection-exhaust device is a water storage tank (40), provided with a water injection pipe (41) with a one-way valve (DF-2) and an overflow pipe (YL) both leading to the outside of the highly realistic parturient model (1); the water storage tank is connected to a liquid level meter (YW) outside the highly realistic parturient model (1), and a liquid level meter (YW) is provided inside the water storage tank (40) The water tank is connected to an input pipe (42') of a micro water injection pump (42); an output pipe (43) on the upper part of the pump is connected to a fifth solenoid valve (F-5) and connected to a fourth three-way A end (ST-4) via a balloon water injection pipe (44); an output pipe (46) of a micro water pump (45) is connected to a water storage tank (40) via a water return pipe (47); an input pipe (48) of the water pump is connected to a sixth solenoid valve (F-6 ) is connected through a balloon water extraction tube (49) to the B end of the tee, and the C end of the tee is connected to a balloon water injection-extraction tube (50) extending out of a highly realistic parturient model (1); the uterine cavity tamponade and gas injection hemostasis balloon (51) is an inverted pear-shaped balloon slightly smaller than the uterine cavity volume, and the lower neck is connected to a balloon connecting tube (52), which is connected to a fifth tee (ST-5), one end of which is connected to the balloon gas injection-extraction tube (39), and the other end is connected to a pressure detection tube (19).

4. An intelligent ultrasound-guided postpartum hemorrhage balloon tamponade hemostasis training device according to claim 1, characterized in that: The intrauterine packing hemostatic balloon and the vaginal balloon. The intrauterine packing water-injected hemostatic balloon (53), with a central tube (54) arranged at the center of the intrauterine balloon, whose upper end communicates with the uterine cavity and the lower end is connected to a negative pressure suction tank (55), and a drainage discharge plug (56) is arranged at the bottom of the tank; the connecting tube (57) at the neck of the intrauterine balloon communicates with the balloon (53), the lower end of the connecting tube (58) at the neck of the intrauterine balloon is connected to a third three-way joint (20-6), the side end of this three-way joint is connected to a pressure detection tube (19), this tube is connected to a pressure sensor (YL) of a chassis (13), and is connected to a microcomputer programming control module (21), this module is connected to a microcirculation blood pump (28), a micro air pump (35), a micro vacuum pump (37), a micro water injection pump (41), a micro water extraction pump (45) through signal lines via their respective relays (J1, J2, J3, J4). For manual intrauterine balloon packing hemostasis training, a pressure measuring catheter (60) for manual operation with a clip (59) provided on the connecting tube can also be connected, and this tube is then connected to an ordinary table-type sphygmomanometer (61) or a desktop mercury sphygmomanometer (62) after removing the blood pressure cuff; Injecting air into the intrauterine balloon can also use a manual air injection device, such as a blood pressure cuff inflation rubber ball (63) or a balloon pump (64). Injecting water into the intrauterine balloon can use a rubber ball enema (65) or a plastic pull-type enema (66), and an injection-type manual pump (67) made by connecting a 100 / 150 ml syringe to two one-way valves (DF) of a three-way joint can also be used, and finally it is also connected to the pressure detection tube (19); On the outer layer of the balloon wall of the intrauterine packing air-injected hemostatic balloon (51) or the intrauterine packing water-injected hemostatic balloon (53), there is medical gauze / hemostatic gauze (68). The vaginal balloon (69) communicates with the connecting tube (70) at the neck of the vaginal balloon and is connected to a blood pressure cuff inflation rubber ball (63') through an air injection catheter (71).

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