Full-automatic ultrasonic imaging postpartum hemorrhage uterine cavity gauze-air bag filling hemostasis training equipment

Abstract

A full-automatic ultrasonic imaging postpartum hemorrhage uterine cavity gauze-air bag filling hemostasis training device relates to medical education equipment and comprises a simulation postpartum puerpera model, a microcomputer controller, a full-automatic blood circulation device, a full-automatic uterine cavity balloon inflation-exhaust-pressure detection device, a manual inflation device, a uterine cavity filling balloon and a vaginal obstruction air bag. The simulated postpartum hemorrhage uterus is arranged in the abdominal skin-subcutaneous tissue and the abdominal-pelvic cavity of the simulated postpartum puerpera model, and is formed in a mold by adopting organic glue with the basically same tissue density and acoustic impedance characteristics as those of a real person, so that postpartum hemorrhage such as vaginal bleeding, bleeding of a bleeding observation tube, and the like is vividly simulated. A color Doppler dynamic blood flow image can be displayed on a display screen by scanning a uterus area through a color ultrasonic diagnostic apparatus probe. The device can be used for carrying out uterine cavity balloon-gauze inflation filling rapid hemostasis, is suitable for carrying out postpartum hemorrhage uterine cavity gauze-balloon filling hemostasis training and examination in the obstetrical department, and remarkably improves the training effect.

Description

Technical Field

[0001] This utility model patent relates to the technical field of medical education equipment, and more specifically, is a fully automatic ultrasound imaging training device for postpartum hemorrhage uterine cavity gauze-balloon tamponade. Background Art

[0002] For over 60 years, the medical community worldwide has used balloon compression hemostasis as an emergency treatment for severe upper gastrointestinal bleeding, epistaxis, and other medical conditions, with proven efficacy. For women experiencing postpartum uterine bleeding, the traditional, simple, and easy method for hemostasis is intrauterine gauze packing. In recent years, obstetrics has also begun using balloon compression for postpartum hemorrhage. This involves inserting a balloon connected to a catheter into the uterine cavity. Air or saline is then injected into the balloon through the catheter, increasing the balloon pressure and mechanically compressing the uterine lining blood vessels, thereby reducing uterine bleeding and ultimately stopping bleeding. In recent years, many hospitals have compared the efficacy of intrauterine balloon tamponade with gauze packing for women with postpartum hemorrhage. The results showed that the uterine balloon tamponade group had significantly shorter vaginal and cesarean delivery times, intraoperative blood loss, 24-hour postoperative blood loss, and blood transfusion requirements than the uterine gauze tamponade group. The tamponade removal time and hospital stay were significantly shortened, the overall incidence of adverse events was significantly reduced, and the overall hemostasis success rate was significantly increased. Uterine balloon tamponade is a faster, safer, and more effective treatment for postpartum hemorrhage than gauze tamponade. Postpartum hemorrhage is a life-threatening condition, requiring critical attention to hemostasis. However, rescuing women with heavy postpartum uterine bleeding requires skilled techniques; even the slightest negligence can lead to failure. Therefore, skill training for obstetricians is essential. However, with growing legal awareness and a growing sense of self-protection, women and their families often refuse to allow inexperienced medical staff and medical students to perform the procedure. Trainees rarely have the opportunity to perform the procedure themselves. Globally, there is a lack of ultrasound-guided training and assessment equipment for uterine gauze-balloon tamponade, severely hindering the development and advancement of obstetric technicians. Therefore, it is very necessary to develop a training device for ultrasound imaging postpartum hemorrhage uterine cavity gauze-balloon tamponade hemostasis. Summary of the Invention

[0003] The purpose of this utility model is to provide a fully automatic ultrasound imaging training device for gauze-balloon tamponade hemostasis for postpartum hemorrhage. Using a simulated model of a parturient woman experiencing postpartum hemorrhage, trainees can use the probe of a real ultra-color ultrasound diagnostic instrument to conduct skill training and assessment of gauze-balloon tamponade hemostasis for postpartum hemorrhage under ultrasound imaging, significantly improving training effectiveness.

[0004] This utility model patent solves the problem of lack of ultrasound imaging training and assessment equipment for postpartum hemorrhage gauze-balloon tamponade hemostasis skills training and assessment in obstetric professionals, filling the gap in medical education equipment. It is the world's first fully automatic ultrasound-guided postpartum hemorrhage gauze-balloon tamponade hemostasis training and assessment equipment.

[0005] A fully automatic ultrasound imaging postpartum hemorrhage uterine cavity gauze-air balloon tamponade hemostasis training device, comprising: a simulated postpartum maternal model, a microcomputer controller, a fully automatic blood circulation device, a fully automatic uterine cavity balloon inflation-exhaust-pressure detection device, a manual inflation device, a uterine cavity tamponade balloon, and a vaginal balloon, characterized in that: the simulated postpartum maternal model (1), the soft and elastic abdominal skin-subcutaneous tissue (2), and the simulated postpartum hemorrhage uterus (4) set in the abdominal-pelvic cavity (3) are all made of organic glue with basically the same tissue density and acoustic impedance characteristics as real people. The simulated postpartum bleeding uterus (4) is formed in a mold, and the abdomen-pelvic cavity is provided with a simulated postpartum bleeding uterus (4), the lower part of the uterine body is the cervix (5), and the lower part is connected to the vagina (6) and the vaginal opening (7) of the vulva; one side of the simulated postpartum bleeding uterus (4) is connected to a simulated blood input tube (8) connected to multiple uterine wall simulated blood vessels (10) through a multi-way tube (9-1), and the other side is connected to a simulated blood return tube (11) through a multi-way tube (9-2); the simulated blood input tube (8) and the simulated blood return tube (11) are both connected to a microcomputer controller through a joint pipe (12) of the simulated postpartum maternal model (1);

[0006] The microcomputer controller is a microcomputer controller case (13-1) provided with a DC power supply (14), a microcomputer programming control module (15), an intelligent non-specific human voice control module (15-2), and a training audio-visual guidance module (15-3); the microcomputer controller case panel (13-2) is provided with a power switch (K), a blood circulation key (K1), a vaginal bleeding key (K2), a bleeding observation key (K3), a balloon gas injection key (K4), a balloon exhaust key (K5), a reset key (K6), a liquid level meter (16), and a pressure gauge (YL); the case rear panel (13-3) is provided with a power cord and its plug (AC220V), a joint pipe (12), a simulated blood input tube (8), a simulated blood return tube (11), a blood bottle simulated blood injection tube (17), a blood bottle overflow tube (18), a uterine cavity balloon gas injection tube (19-1), and a balloon pressure detection tube (19-2). The fully automatic blood circulation device is a microcomputer controller case (13-1) equipped with a blood storage bottle (20), a blood bottle simulated blood injection tube (17), connected to a one-way check valve or a water stop clamp (22), and a blood bottle overflow tube (18). The blood storage bottle (20) is connected to a liquid level meter (16); an input tube (25) of a micro blood circulation pump (23) is connected to the blood storage bottle (20); an output tube 26 of the micro blood circulation pump (23) exits the microcomputer controller case (13-1) through a joint pipe (12), is connected to a joint pipe (12) of a simulated blood input tube (8) of the uterine wall of a simulated postpartum woman model (1), is connected to a first three-way (27-1) through a catheter, and is divided into two paths. The first path is connected to the simulated blood input tube (8) of the simulated postpartum bleeding uterus (4) through the joint pipe (12), and the second path is connected to a flow regulating valve (28). The second three-way connection (27-2) is connected to be divided into two, the first path is connected to the vaginal blood flow blood vessel (30) through the first electromagnetic valve (29-1), passes through the vagina (6) and exits the vaginal opening (7), and is inserted into the simulated blood collection container (31); the other end of the three-way connection (27-2) is passed through the second electromagnetic valve (29-2) to enter the bleeding observation tube (32) of the simulated postpartum maternal model (1); the lower end of the bleeding observation tube (32) is connected to the catheter through the one-way check valve (33) through the third three-way connection (27-3) to connect to the simulated blood return tube (11); the end is connected to the blood storage bottle (20) through the simulated blood return tube (11) through the joint pipe (12) of the microcomputer controller chassis (13-1); the probe (TT) of the color ultrasonic diagnostic instrument (CSY) is used to scan the uterine area of ​​multiple uterine wall blood vessels 10, and a color Doppler dynamic blood flow image (TX) can be presented on the display screen (XSP).The uterine cavity balloon inflation-pressure detection-automatic control device is a device in which a micro air pump (34) is arranged in a microcomputer controller chassis. The air pump output pipe (35) is divided into two parts through a fourth three-way pipe (27-4). The first part is connected to the uterine cavity balloon inflation pipe (19-1), and the second part is connected to a fifth three-way pipe (27-5). One end of the fifth three-way pipe (27-5) is connected to a pressure detection pipe (19-2) and a 0-300 mmHg pressure gauge (36). A wire (37) is fixed to the dial (36) of the case with insulation treatment. A metal contact (38) is provided at 130 mmHg of the pressure drop (36') to connect to another wire. The two wires are led out of the watch case and connected to the microcomputer programming control module (15), which is connected to the micro blood circulation pump (23) via the first signal line (XH-1) through the first relay (JD-1); the microcomputer programming control module (15) is connected to the micro air pump (34) via the second signal line (XH-2) through the second relay (JD-2); and the other end of the fifth three-way valve (27-5) is connected to the exhaust solenoid valve (39). The manual inflation device adopts a 100-200ml injection enema (41), the nipple of the injection enema (41) is connected to a sixth tee (27-6), the upper end of the sixth tee (27-6) is connected to a first one-way valve (42) that can only be opened in the direction of the balloon as an inflation valve; the side end of the sixth tee (27-6) is connected to a second one-way valve (43) that can only be opened in the direction of the sixth tee (27-6) as an air inlet valve; another method of the manual inflation device is to use a rubber ball (44-1) with a valve and inflated by a sphygmomanometer. The uterine cavity packing balloon is a spherical or inverted pear-shaped uterine cavity packing balloon (45) made of plastic or latex. The neck of the balloon is sealed and connected to the uterine cavity balloon connecting tube (46), and the lower end is connected to the seventh three-way tube (27-7). One end of the seventh three-way is connected to the uterine cavity balloon inflation tube (19-1), and the other end is connected to the pressure detection tube (19-2); the outer wall of the uterine cavity packing balloon (45) is covered with 1-2 layers of hemostatic gauze / medical gauze (47). The vaginal balloon (48) is a small balloon neck connected to the joint pipe (12), and is connected to the rubber ball (44-2) with a valve for inflating the valved sphygmomanometer through the inflation tube (50).

[0007] The advantages and beneficial effects of this utility model patent are: a real color ultrasound diagnostic instrument probe can be used to scan the simulated parturient uterine area, dynamic color blood flow can be seen on the ultrasound display screen, bleeding can be seen in the vagina and bleeding observation tube, and postpartum hemorrhage can be vividly simulated. The utility model patent is used to conduct skill training and assessment of postpartum hemorrhage gauze-balloon tamponade hemostasis, which can quickly stop the simulated postpartum hemorrhage and significantly improve the training effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present invention is further described below with reference to the accompanying drawings.

[0009] Figure 1This is a schematic diagram of the overall structure of the utility model

[0010] Figure 2 This is a schematic diagram of the simulated postpartum maternity model of the present invention

[0011] Figure 3 Schematic diagram of the uterine blood circulation and postpartum hemorrhage simulation device of the present invention

[0012] Figure 4 This is a diagram of the utility model of the automatic control device for uterine cavity balloon inflation, exhaust, and pressure detection

[0013] Figure 5 This is a schematic diagram of the structure of the uterine cavity balloon of the utility model

[0014] Figure 6 This is a schematic diagram of the vaginal balloon structure of the utility model

[0015] Figure 7 This is a schematic diagram of the structure of the manual inflation device of the utility model

[0016] Figure 8 This is a schematic diagram of the external structure of the chassis of the utility model

[0017] Figure 9 This is a schematic diagram of the external rear view structure of the chassis of this utility model

[0018] Figure 10 This is a schematic diagram of the control circuit principle of the utility model. DETAILED DESCRIPTION

[0019] The abdominal skin and subcutaneous tissue 2, the simulated postpartum hemorrhage uterus 4, the cervix 5, and the vagina 6 of the simulated postpartum hemorrhage maternal model 1 of the present invention are formed using a liquid silicone rubber mold having substantially the same tissue density and ultrasonic acoustic impedance characteristics as real human tissues. The model's inner lining skeleton is injection molded using rigid PVC. The simulated blood inlet tube 8, the simulated uterine wall blood vessel 10, the simulated blood return tube 11, and various catheters are made of silicone rubber tubes. Other components are available on the market. The micro blood circulation pump 23 uses a 12 / 24V 5W 5-10L / min; the micro air pump 34 uses a 12 / 24V 5W; the pressure gauge has a pressure range of 0-300mmHg; the chip of the microcomputer programming control module (15) uses a 51 single-chip microcomputer; and the postpartum hemorrhage tamponade hemostasis balloon 45 is made of a reinforced natural latex balloon. The simulated blood is prepared by adding 0.5g of animal blood powder and red pigment to 1000ml of pure water and stirring. Prepare various parts and install them according to the instructions and the drawings in the instructions. Adjust the flow regulating valve 28 connected to the simulated blood input tube 8 through the second channel to dozens of drops per minute. After debugging, it can be used.

[0020] The first step is to make preparations: when using, place the color ultrasound diagnostic instrument, the simulated postpartum maternal model 1, the microcomputer controller chassis 13-1, the postpartum hemorrhage tamponade hemostatic balloon 45 and the manual gas injection device, the simulated disinfection items, etc. on the experimental table, and insert the AC 220V power plug of the chassis 13 into the power socket.

[0021] The second step is to connect the pipelines and inject simulated blood into the blood storage bottle 20. During postpartum hemorrhage balloon tamponade hemostasis skill training / assessment, the neck of the uterine tamponade balloon 45 for postpartum hemorrhage tamponade hemostasis is sealed and connected to the uterine balloon connection tube 46, which is connected to the seventh three-way connection 27-7 below. One end of the seventh three-way connection is connected to the uterine balloon inflation tube 19-1, and the other end is connected to the pressure detection tube 19-2. Simulated blood is drawn with a large syringe and injected into the blood storage bottle 20 through the blood bottle simulated blood injection tube 17 until simulated blood drips out of the blood bottle overflow tube 18, indicating that the blood is full. Because the blood bottle simulated blood injection tube 21 is equipped with a one-way check valve / or water stop clamp 22, the injected simulated blood will not flow out.

[0022] Step 3: Ultrasonic imaging simulates postpartum hemorrhage. Press the power switch K, and the indicator light L will light up. Press the blood circulation key K1, and the indicator light L1 will light up, starting the micro-blood circulation pump 23. The blood pump inlet tube 24 draws simulated blood from the blood storage bottle 20, connects to the simulated uterine wall blood inlet tube 8 of the simulated postpartum maternal model 1 through the joint pipe 12, and enters multiple simulated uterine wall blood vessels 10 through the multi-way tube 9-1. After being collected, it flows through the multi-way tube 9-2 on the opposite side and flows into the simulated blood return tube 11. The end of the tube is connected to the joint pipe 12 and returns to the blood storage bottle 20 in the microcomputer controller chassis 13-1. This process is repeated in a cycle, forming a blood circulation in the uterine wall. Because the simulated postpartum maternal model 1, the abdominal skin and subcutaneous tissue 2, and the simulated postpartum hemorrhage uterus 4 of the present utility model are all based on the same tissue density and ultrasonic acoustic impedance characteristics as real people, the relative motion between the probe and the simulated blood in the uterine wall blood vessels produces a Doppler effect. Therefore, according to the ultrasound diagnosis operation routine, the color ultrasound diagnostic instrument CSY ultrasound probe TT is used to scan the abdominal uterine area of ​​the simulated postpartum maternal model 1, and a dynamic color Doppler blood flow image TX can be displayed on the ultrasound display screen, which means postpartum uterine bleeding.

[0023] Step 4: Simulate visible postpartum bleeding

[0024] Pressing the vaginal bleeding button K2 illuminates the indicator light L2, energizing and opening the first solenoid valve 29-1. Blood in the simulated blood inlet tube 8 flows through the second-connected flow control valve 28, then through the second three-way valve 27-2. The simulated blood then flows through the first channel (i.e., the solenoid valve 20-1), the vaginal bleeding tube 30, and through the vagina 6 to the vaginal opening 7. This simulated blood can be visually observed flowing into the simulated blood collection container 31, vividly simulating postpartum vaginal bleeding. The simulated blood collected in the simulated blood collection container 31 can be drawn with a syringe and then injected into the blood storage bottle 20 through the simulated blood injection tube 17. Pressing the bleeding observation button K3 illuminates the indicator light L3, energizing and opening the second solenoid valve 29-2. The simulated blood then flows through the third three-way valve 27-3 into the bleeding observation tube 32 of the simulated postpartum woman model 1. The rate of blood dripping can be observed as tens of drops per minute. The simulated blood passes through the catheter connected to the lower end of the tube, through the one-way check valve 33, through the simulated blood return pipe 11, through the joint pipe 12-4 of the chassis 13, and through the blood storage bottle simulated blood return pipe (11) to connect to the blood storage bottle (20);

[0025] Step 5: Training and assessment of intrauterine gauze-balloon tamponade hemostasis

[0026] 1. Cover the outer wall of the intrauterine balloon 45 with 1-2 layers of medical gauze or hemostatic gauze 47, clamp the intrauterine balloon 45 with surgical oval forceps and place it in the uterine cavity, then clamp the vaginal balloon 48 with oval forceps and place it in the vagina, squeeze the inflatable rubber ball (44-2) connected to the balloon by hand to pressurize the vaginal balloon 46 8-10 times to expand the balloon and block the vagina 6, preventing the intrauterine balloon 45 from falling out after inflation and pressurization.

[0027] 2. Fully automatic balloon inflation for uterine balloon tamponade hemostasis skills training

[0028] Press the balloon inflation button K4, and the indicator light L4 lights up. The micro air pump 34 set in the microcomputer controller chassis 13 is powered on and the air is divided into two parts through the air pump output pipe 34' and the fourth three-way 27-4. The compressed air of the first micro air pump 34 continuously enters the uterine cavity balloon 45 through the connected uterine cavity balloon inflation pipe 19-1 to increase the air pressure in the balloon; the other compressed air enters the pressure gauge 36 connected to 0-300mmHg through the pressure detection pipe 19-2. Because a wire 37-1 is fixed to the metal case of the pressure gauge with an insulated dial 35' of the case, a metal contact 38 is set at 130mmHg. Connecting wire 37-2, when the air pressure rises to 130 mmHg, the tail of the pressure gauge needle touches the metal contact 38 there, short-circuiting the two wires. This signal is transmitted to the connected microcomputer programmable control module 15, which issues a command via the first signal line XH-1 through the first relay JD-1 to shut down the connected micro-blood circulation pump 23. Simultaneously, the module issues a command via the second signal line XH-2 through the second relay JD-2 to shut down the connected micro-air pump 34. At this point, the color Doppler dynamic blood flow image TX on the display screen XSP scanned by the ultrasound probe TT disappears, indicating that the postpartum hemorrhage has ceased. Simultaneously, bleeding from the vaginal bleeding tube 30 and the bleeding observation tube 32 also ceases, indicating that the operator has successfully stopped the hemostasis with gauze and balloon tamponade. The assessment result is considered a passing score.

[0029] 3. Skill training for manual balloon inflation and intrauterine balloon tamponade hemostasis

[0030] In order to conduct "real-life" training in obstetric clinical rescue of postpartum hemorrhage, manual balloon inflation can be used to train uterine cavity balloon tamponade hemostasis skills. A 100-200ml syringe or injection enema 41 can be used, with its nipple connected to the uterine cavity balloon inflation tube 40. Pulling the piston inner core of the syringe or enema, the one-way valve A42, generates negative pressure, drawing air into the tube of the device through the side end of the sixth three-way connection 27-6 connected to the air inlet one-way valve A42. Then, the piston inner core is pushed, generating high-pressure air. The one-way valve A42 closes under the action of the high-pressure air, and the high-pressure air is filled into the uterine cavity balloon 45 through the exhaust valve one-way valve B43. Repeatedly pulling and pushing the piston inner core of the syringe or enema acts as a "manual air pump" to continuously fill the uterine cavity balloon 45 with high-pressure air. The manual inflation device of the second embodiment uses a rubber ball (44--1) with a valve used for inflating a sphygmomanometer as a manual air pump to inflate the uterine cavity balloon 45. Compressed air passes through pressure detection tube 35 and enters a connected 0-300 mmHg pressure gauge 36. When the air pressure reaches 130 mmHg, microcomputer programmable control module 15 issues a command via first signal line XH-1 and first relay JD-1 to shut down connected micro-blood circulation pump 23. Simultaneously, the module issues a command via second signal line XH-2 and second relay JD-2 to shut down connected micro-air pump 34. At this point, the color Doppler dynamic blood flow image TX displayed on display screen XSP of ultrasound probe TT disappears, indicating the cessation of postpartum bleeding. Simultaneously, bleeding from vaginal bleeding tube 30 and bleeding observation tube 32 also ceases, indicating that the operator's manual inflation device successfully achieved intrauterine gauze-balloon tamponade for postpartum bleeding, resulting in a passing score.

[0031] For many years, the traditional obstetric treatment for postpartum hemorrhage has been uterine gauze-balloon tamponade. The principle of hemostasis is to compress the capillaries of the uterine wall with uterine tamponade to reduce bleeding. The rough surface of the tamponade activates coagulation factors that attract platelets and promote clotting. This project utilizes a 45-meter uterine tamponade balloon with one or two layers of medical gauze / hemostatic gauze on its outer wall. The balloon is inflated to an average of 130 mmHg, the pressure of a normal laboring uterus (100-150 mmHg). This compresses the capillaries, reduces bleeding, and stops bleeding. Furthermore, the one or two layers of gauze on the outer wall of the balloon activate coagulation factors that attract platelets and promote clotting. This method is more rapid and reliable than simple gauze tamponade for hemostasis. After skill training or assessment is completed, press the balloon exhaust button K5, and the exhaust solenoid valve 39 connected to the balloon inflation tube 40 is energized and opened, and the high-pressure air in the uterine cavity filling balloon 45 is discharged through the exhaust solenoid valve. Then press the reset button K6 to reset the control system, and then new training or assessment can be carried out.

Claims

1. A fully automatic ultrasound imaging postpartum hemorrhage uterine cavity gauze-balloon tamponade hemostasis training device, comprising: The invention relates to a simulated postpartum maternal model, a microcomputer controller, a fully automatic blood circulation device, a fully automatic uterine cavity balloon inflation-exhaust-pressure detection device, a manual inflation device, a uterine cavity packing balloon, and a vaginal balloon. The characteristics of the simulated postpartum maternal model (1) are as follows: the soft and elastic abdominal skin-subcutaneous tissue (2), the simulated postpartum hemorrhage uterus (4) is set in the abdomen-pelvic cavity (3), and the organic glue with substantially the same density and acoustic impedance characteristics as real human tissue is used for molding in the mold. The postpartum bleeding uterus (4) has a cervix (5) at the lower part of the uterine body, which is connected to the vagina (6) and the vulva vaginal opening (7); one side of the simulated postpartum bleeding uterus (4) is connected to a simulated blood input tube (8) connected to multiple uterine wall simulated blood vessels (10) through a multi-way tube (9-1), and is connected to a simulated blood return tube (11) through a multi-way tube (9-2) on the other side. The simulated blood input tube (8) and the simulated blood return tube (11) are both connected to a microcomputer controller through a joint pipe (12) of the simulated postpartum maternal model (1).

2. The fully automatic ultrasound imaging postpartum hemorrhage intrauterine gauze-balloon tamponade hemostasis training device according to claim 1, characterized in that: The microcomputer controller is a microcomputer controller case (13-1) provided with a DC power supply (14), a microcomputer programming control module (15), an intelligent non-specific human voice control module (15-2), and a training audio-visual guidance module (15-3); the microcomputer controller case panel (13-2) is provided with a power switch (K), a blood circulation key (K1), a vaginal bleeding key (K2), a bleeding observation key (K3), a balloon inflation key (K4), a balloon exhaust key (K5), a reset key (K6), a liquid level meter (16), and a pressure gauge (YL); the case rear panel (13-3) is provided with a power cord and its plug (AC220V), a joint pipe (12), a simulated blood input tube (8), a simulated blood return tube (11), a blood bottle simulated blood injection tube (17), a blood bottle overflow tube (18), a uterine cavity balloon inflation tube (19-1), and a balloon pressure detection tube (19-2).

3. The fully automatic ultrasound imaging postpartum hemorrhage intrauterine gauze-balloon tamponade hemostasis training device according to claim 1, characterized in that: The fully automatic blood circulation device is a microcomputer controller case (13-1) equipped with a blood storage bottle (20), a blood bottle simulated blood injection tube (17), connected to a one-way check valve or a water stop clamp (22), and a blood bottle overflow tube (18). The blood storage bottle (20) is connected to a liquid level meter (16); an input tube (25) of a micro blood circulation pump (23) is connected to the blood storage bottle (20), and an output tube (26) of the micro blood circulation pump (23) exits the microcomputer controller case (13-1) through a joint pipe (12), is connected to the joint pipe (12) of the simulated blood input tube (8) of the uterine wall of the simulated postpartum maternal model (1), and is connected to the first three-way (27-1) through a catheter. Two routes, the first route is connected to the simulated blood input tube (8) of the simulated postpartum bleeding uterus (4) through the joint pipe (12), the second route is connected to the flow regulating valve (28), and is connected to the second three-way (27-2) through the catheter to be divided into two, the first route is connected to the vaginal blood flow tube (30) through the first electromagnetic valve (29-1), and exits the vaginal opening (7) through the vagina (6), and is inserted into the simulated blood collection container (31), the other end of the three-way (27-2) is passed through the second electromagnetic valve (29-2) into the bleeding observation tube (32) of the simulated postpartum maternal model (1), the lower end of the bleeding observation tube (32) is connected to the catheter through the one-way check valve (33) through the third three-way (27-3) to connect to the simulated blood return tube (11 ), the end of which is connected to the blood storage bottle (20) through the joint pipe (12) of the microcomputer controller chassis (13-1) through the simulated blood return pipe (11); the probe (TT) of the color ultrasonic diagnostic instrument (CSY) is used to scan the uterine area of ​​multiple uterine wall blood vessels (10) to present a color Doppler dynamic blood flow image (TX) on the display screen (XSP); the uterine cavity balloon inflation-pressure detection-automatic control device is a micro air pump (34) set in the microcomputer controller chassis, the air pump output pipe (35) is divided into two through the fourth three-way (27-4), the first way is connected to the uterine cavity balloon inflation pipe (19-1), and the second way is connected to the fifth three-way (27-5), the fifth three-way (27- 5) One end is connected to a pressure detection tube (19-2) and a 0-300 mmHg pressure gauge (36), a wire (37) is fixed to a dial (36') insulated from the case, a metal contact (38) is set at 130 mmHg to connect to another wire, these two wires are led out of the case to connect to a microcomputer programming control module (15), and are connected to a micro blood circulation pump (23) via a first signal line (XH-1) through a first relay (JD-1); the microcomputer programming control module (15) is connected to a micro air pump (34) via a second signal line (XH-2) through a second relay (JD-2); the other end of the fifth three-way (27-5) is connected to an exhaust solenoid valve (39).

4. The fully automatic ultrasound imaging postpartum hemorrhage intrauterine gauze-balloon tamponade hemostasis training device according to claim 1, characterized in that: The manual inflation device adopts a 100-200ml injection enema (41), the nipple of the injection enema (41) is connected to a sixth tee (27-6), the upper end of the sixth tee (27-6) is connected to a first one-way valve (42) that can only be opened in the direction of the balloon as an inflation valve; the side end of the sixth tee (27-6) is connected to a second one-way valve (43) that can only be opened in the direction of the sixth tee (27-6) as an air inlet valve; another method of the manual inflation device is to use a rubber ball (44-1) with a valve and inflated by a sphygmomanometer.

5. The fully automatic ultrasound imaging postpartum hemorrhage intrauterine gauze-balloon tamponade hemostasis training device according to claim 1, characterized in that: The uterine cavity packing balloon is a spherical or inverted pear-shaped uterine cavity packing balloon (45) made of plastic or latex. The neck of the balloon is sealed and connected to the uterine cavity balloon connecting tube (46), and the lower end is connected to the seventh three-way tube (27-7). One end of the seventh three-way is connected to the uterine cavity balloon inflation tube (19-1), and the other end is connected to the pressure detection tube (19-2); the outer wall of the uterine cavity packing balloon (45) is covered with 1-2 layers of hemostatic gauze / medical gauze (47).

6. The fully automatic ultrasound imaging postpartum hemorrhage intrauterine gauze-balloon tamponade hemostasis training device according to claim 1, characterized in that: The vaginal balloon (48) is a small balloon neck connected to a joint pipe (12), which is connected to a rubber ball (44-2) with a valve for inflating a valved sphygmomanometer through an inflation conduit (50).

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