Compact arterial blood supply simulation device

Abstract

The utility model provides a compact arterial blood supply simulation device which is provided with an upper cover body and a lower box body assembly, the lower box body assembly is divided into a closed liquid storage tank in a lower box body, simulation blood is contained in the liquid storage tank, and a liquid supply pipeline assembly which is connected with the liquid storage tank and supplies liquid to the outside is further arranged on the outer side of the liquid storage tank in the lower box body. The liquid supply pipeline assembly comprises an injector, a connecting pipeline and a flow speed regulator; a motor speed regulator, a rechargeable battery, a power switch and a power management module are further installed in the lower box body of the lower box body assembly. During use, the output hose is connected into a corresponding blood vessel of an animal in-vitro biological tissue or an operation training table with a simulated blood vessel, and then simulation training operation of vascular anastomosis can be carried out. The arterial blood supply simulation device is very compact in overall structure, small in occupied space, not prone to being knocked over or damaged and very convenient to carry and store when placed on an operation practice table for use, and can be used in occasions without an external power source.

Description

Technical Field

[0001] The utility model relates to an arterial blood supply simulation device, in particular to a compact arterial blood supply simulation device used for microsurgeons' operation skill training, belonging to the technical field of medical teaching and training equipment. Background Art

[0002] Vascular anastomosis is one of the most basic skills for microsurgeons. This skill requires high operational requirements for doctors. To master the skills of vascular anastomosis, a lot of practical training is required. At present, vascular anastomosis skill training is generally carried out using experimental animals. If live animals are used, relevant applications must be filled out and animal experiment ethics review must be passed. The entire process is relatively cumbersome, and the acquisition of live experimental animals is also quite troublesome, which is not conducive to the development of skill training. If animal ex vivo biological tissue is used for training, it is not necessary to go through the cumbersome animal experiment ethics review, and ex vivo biological tissue is easier to obtain and more suitable for skill training. However, the blood vessels in the ex vivo biological tissue of animals have no blood flow. If used directly for vascular anastomosis skill training, it cannot effectively simulate the arterial blood supply of the blood vessels of living animals, and the actual effect of vascular anastomosis cannot be considered.

[0003] To this end, the inventor's prior patent CN 202222034556.5 provides an in vitro biological tissue arterial blood supply and venous blood return simulation system, which has a syringe in the middle of the base, a linear slider bearing and a turntable swing arm mechanism at the rear of the syringe, a sliding rod slidably supported in the linear slider bearing, the sliding rod connected to the rear end of the syringe core rod button, and driven back and forth by a DC reduction motor through the turntable swing arm mechanism; an infusion bag filled with simulated blood is hung on one side of the base through an infusion rod, and the infusion bag is plugged with two infusion lines; the base is provided with a pipeline connection assembly in front of the syringe, and the syringe, two infusion lines and an external output hose are connected together through the pipeline connection assembly. When in use, the external output hose is connected to the corresponding blood vessel of the animal's in vitro biological tissue, so that the artery of the in vitro biological tissue can obtain arterial pulsation and blood flow, and continuous venous return can also be achieved. In this way, the animal's in vitro biological tissue can be used to simulate the simulation training operation of vascular anastomosis of living animals.

[0004] However, the simulation system described in the aforementioned prior patent has certain drawbacks in actual use. The main drawbacks are the loose distribution of components, the presence of a high-hanging infusion bag, and the large space required for placement on the training table. This makes it easy for components to fall over or become damaged during practice, and it is also inconvenient to transport and store when not in use. Therefore, the inventors have improved this simulation system, resulting in a compact arterial blood supply simulator. Utility Model Content

[0005] The utility model aims to provide a compact arterial blood supply simulation device, which is used for simulating arterial blood supply for microsurgeons to perform simulation training operations of vascular anastomosis.

[0006] The specific technical solutions adopted by this utility model are as follows:

[0007] A compact arterial blood supply simulation device comprises an upper cover body and a lower box body assembly, wherein the lower box body assembly comprises a rectangular lower box body with an open top and right side, and the upper cover body is a bent cover shell for sealing the top and right side of the lower box body, and the lower box body of the upper cover body and the lower box body assembly is buckled together to form a closed rectangular shell.

[0008] The lower box body is assembled with a sealed liquid storage tank separated at the lower left position inside the lower box body, and the liquid storage tank contains simulated blood. The upper part of the liquid storage tank is connected to a liquid adding joint and a liquid return joint extending upward, and the lower right side of the liquid storage tank is connected to a liquid outlet joint extending to the right; a 4# medical one-way valve connected to the liquid adding joint is provided on the outside of the liquid storage tank inside the lower box body; a liquid supply pipeline assembly is also provided on the outside of the liquid storage tank inside the lower box body.

[0009] The liquid supply pipeline assembly includes three parts: a syringe, a connecting pipeline and a flow rate regulator; the syringe is provided with a syringe jacket which is horizontally installed above the liquid storage tank with its liquid outlet port facing right, a syringe plug which can slide back and forth is installed in the syringe jacket, and a micro-telescopic rotary reduction motor is also installed in the left end of the syringe jacket in the lower box body, the telescopic end of the micro-telescopic rotary reduction motor is fixedly connected to the syringe plug, and the syringe plug is driven by the micro-telescopic rotary reduction motor to slide back and forth in the syringe jacket; the connecting pipeline is respectively provided with a vertically placed 1# medical tee connector and a horizontally placed 2# medical tee connector on the right and above the syringe jacket, the middle port of the 1# medical tee connector is connected to the liquid outlet port of the syringe jacket, and the liquid outlet connector of the liquid storage tank is connected to the 1# medical elbow and the 1# medical one-way valve after passing through the upward-bent 1# medical elbow. The lower port of the three-way connector is connected, the upper port of the 1# medical three-way connector is connected to the right port of the 2# medical three-way connector after passing through the 2# medical elbow bent to the left and the 2# medical one-way valve, the middle port of the 2# medical three-way connector is connected to the return liquid connector of the liquid storage tank after passing through the 3# medical elbow bent downward, and a movable flow limiting core rod is also set in the horizontal section connecting pipeline between the middle port of the 2# medical three-way connector and the 3# medical elbow. The left port of the 2# medical three-way connector is connected to the liquid inlet of the output hose after passing through the 3# medical one-way valve, and the tube body of the output hose passes through the corresponding notch on the left side wall of the lower box body to the left and then extends outward; the output hose is provided with a flow rate regulator on the pipeline inside the lower box body, and the flow rate regulator adopts an extrusion type flow rate regulator that elastically squeezes the outer wall of the output hose, and the adjustment handle of the flow rate regulator extends to the outside of the lower box body.

[0010] The lower box body is assembled inside the lower box body, and a motor speed regulator matching the micro telescopic rotary reduction motor is installed, and the speed regulation handle of the motor speed regulator extends to the outside of the lower box body; the lower box body is also assembled inside the lower box body, and a rechargeable battery, a power switch and a power management module are installed, and the button of the power switch is exposed to the outside of the lower box body. The rechargeable battery is provided with a circuit connected to the power management module via the power switch, the power management module is provided with a circuit connected to the motor speed regulator, and the motor speed regulator is provided with a circuit connected to the micro telescopic rotary reduction motor.

[0011] To use this arterial blood supply simulation device, the liquid outlet of the output hose is connected to a needle, inserted into the corresponding blood vessel lumen of an isolated animal biological tissue, and tied with sutures. After turning on the power switch, the animal biological tissue can be used to simulate a live animal for vascular anastomosis simulation training. Alternatively, the liquid outlet of the output hose can be connected to an operating training platform with a simulated blood vessel, and the simulated blood vessel on the operating training platform can be used to perform vascular anastomosis simulation training. This arterial blood supply simulation device fully integrates the liquid storage tank and liquid supply pipeline components within a rectangular housing. The overall structure is very compact, taking up little space when placed on the operating training platform for use, and is not easily knocked over or damaged during practice. It is also very convenient to transport and store when not in use. It is powered by a rechargeable battery and can be used in situations where an external power source is not available. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a three-dimensional schematic diagram of the arterial blood supply simulation device.

[0013] Figure 2 This is a three-dimensional schematic diagram of the upper cover and lower box body of the arterial blood supply simulation device when assembled and disassembled.

[0014] Figure 3 for Figure 2 Schematic diagram of the disassembly of the lower box assembly.

[0015] Figure 4 for Figure 2 1. A top view of the lower box assembly in FIG.

[0016] Figure 5 for Figure 2 A three-dimensional schematic diagram of the lower box assembly when it is rotated to a perspective with the back facing forward.

[0017] Figure 6 This is a three-dimensional schematic diagram when the lower box body is rotated to the right side facing forward.

[0018] Figure 7 for Figure 6 AA section view in .

[0019] Figure 8 for Figure 3Schematic diagram of the disassembled liquid supply pipeline components in.

[0020] Figure 9 for Figure 8 Schematic diagram of the flow regulator in the figure.

[0021] Figure 10 This is a schematic diagram of the 2# medical tee connector and the 3# medical elbow in the connecting pipeline after being disassembled.

[0022] In the figure: 1-upper cover, 2-lower box body, 2.1-syringe card slot, 2.2-motor receiving slot, 2.3-battery receiving slot, 3-liquid storage tank, 3.1-observation window, 4-liquid adding joint, 5-liquid return joint, 6-liquid outlet joint, 7-4# medical one-way valve, 8-syringe, 9-connecting pipe, 10-flow rate regulator, 11-syringe jacket, 12-syringe rubber plug, 13-micro telescopic rotary reduction motor, 14-1# medical three-way joint, 15-2# medical three-way joint, 1 6-1# medical elbow, 17-1# medical one-way valve, 18-2# medical elbow, 19-2# medical one-way valve, 20-3# medical elbow, 21-flow limiting core rod, 22-3# medical one-way valve, 23-output hose, 24-adjusting handle, 25-motor speed regulator, 26-rechargeable battery, 27-power switch, 28-power management module, 28.1-charging interface, 29-rectangular box seat, 29.1-anti-rotation rib, 30-blind hole screw seat, 31-top column, 32-protective cover. DETAILED DESCRIPTION

[0023] The following is a further description of the present invention in conjunction with the accompanying drawings. In the description of the present invention, directional words such as "front", "back", "left", "right", "up", and "down" are based on the attached drawings of the specification. Figure 1-3 The orientation or position relationship shown is defined only for the convenience of describing the present invention, rather than requiring a specific orientation of the device or element, and should not be regarded as a limitation to the present invention.

[0024] like Figure 1-10 As shown, the arterial blood supply simulation device is provided with an upper cover body 1 and a lower box body assembly. The lower box body assembly is provided with a rectangular lower box body 2 with an open top and right side. The upper cover body 1 is a bent cover shell that covers the top and right side of the lower box body 2. The upper cover body 1 and the lower box body 2 of the lower box body assembly are buckled together to form a closed rectangular shell.

[0025] The lower box body is assembled in the lower left position inside the lower box body 2, and there is a sealed liquid storage tank 3 separated. The liquid storage tank 3 contains simulated blood. The upper part of the liquid storage tank 3 is connected to a liquid adding joint 4 and a liquid return joint 5 extending upward, and the lower right side of the liquid storage tank 3 is connected to a liquid outlet joint 6 extending to the right; inside the lower box body 2, a 4# medical one-way valve 7 is provided on the outside of the liquid storage tank 3 and connected to the liquid adding joint 4; inside the lower box body 2, a liquid supply pipeline assembly is also provided on the outside of the liquid storage tank 3.

[0026] The liquid supply pipeline assembly includes three parts: a syringe 8, a connecting pipeline 9 and a flow rate regulator 10; the syringe 8 is provided with a syringe jacket 11 horizontally mounted above the liquid storage tank and with its liquid outlet port facing right, a syringe plug 12 that can slide back and forth is housed in the syringe jacket 11, and a micro-telescopic rotary reducer motor 13 is also installed at the left end of the syringe jacket 11 in the lower box body 2. The telescopic end of the micro-telescopic rotary reducer motor 13 is fixedly connected to the syringe plug 12, and the syringe plug 12 is driven by the micro-telescopic rotary reducer motor 13 to slide back and forth in the syringe jacket 11; the connecting pipeline 9 is respectively provided with a vertically placed 1# medical tee connector 14 and a horizontally placed 2# medical tee connector 15 on the right and above the syringe jacket 11, the middle port of the 1# medical tee connector 14 is connected to the liquid outlet port of the syringe jacket 11, and the liquid outlet connector 6 of the liquid storage tank 3 is connected to the 1# medical elbow 16 and the 1# medical one-way valve 17 that are bent upwards. The lower port of the 1# medical tee connector 14 is connected, the upper port of the 1# medical tee connector 14 is connected to the right port of the 2# medical tee connector 15 after passing through the 2# medical elbow 18 and the 2# medical one-way valve 19 bent to the left, and the middle port of the 2# medical tee connector 15 is connected to the return liquid connector 5 of the liquid storage tank 3 after passing through the 3# medical elbow 20 bent downward. A movable flow limiting core is also set in the horizontal section of the connecting pipe between the middle port of the 2# medical tee connector 15 and the 3# medical elbow 20. Rod 21, the left port of 2# medical three-way connector 15 is connected to the liquid inlet of output hose 23 after passing through 3# medical one-way valve 22, and the tube body of output hose 23 passes through the corresponding notch on the left side wall of lower box body 2 to the left and then extends outward; the output hose 23 is provided with a flow rate regulator 10 on the pipeline inside lower box body 2, and the flow rate regulator 10 adopts an extrusion type flow rate regulator that elastically squeezes the outer wall of output hose 23, and the adjustment handle 24 of flow rate regulator 10 extends to the outside of lower box body 2.

[0027] The lower box body is assembled inside the lower box body 2 and is equipped with a motor speed regulator 25 that matches the micro telescopic rotary reduction motor 13, and the speed regulating handle of the motor speed regulator 25 extends to the outside of the lower box body 2; the lower box body is assembled inside the lower box body 2 and is also equipped with a rechargeable battery 26, a power switch 27 and a power management module 28, and the button of the power switch 27 is exposed to the outside of the lower box body 2. The rechargeable battery 26 is provided with a circuit connected to the power management module 28 through the power switch 27, the power management module 28 is provided with a circuit connected to the motor speed regulator 25, and the motor speed regulator 15 is provided with a circuit connected to the micro telescopic rotary reduction motor 13.

[0028] Furthermore, the flow rate regulator 10 is provided with an open rectangular box seat 29 fixedly mounted on the inside of the lower box body 2, and a middle hole and a horizontal groove that coincides with the middle hole and cuts inward are provided in the middle of the front side wall of the rectangular box seat 29, and an anti-rotation convex strip 29.1 is provided in the middle of the box bottom inside the rectangular box seat 29; a blind hole screw seat 30 with an opening facing forward is placed in the rectangular box seat 29, and the side wall of the blind hole screw seat 30 is provided with four grooves of upper, lower, left and right that cut in from the front end face backward. When the blind hole screw seat 30 is placed in the rectangular box seat 29, the lower groove of the blind hole screw seat 30 is stuck on the anti-rotation convex strip 29.1 of the box bottom of the rectangular box seat 29, the screw hole of the blind hole screw seat 30 is opposite to the middle hole of the front side wall of the rectangular box seat 29, and the left and right grooves of the blind hole screw seat 30 are opposite to the middle hole of the front side wall of the rectangular box seat The horizontal grooves of the seat 29 face each other; a top post 31 is placed at the bottom of the blind hole screw seat 30. The adjustment handle 24 of the flow rate regulator 10 is a handle with a screw at the front end. The screw of the adjustment handle 24 extends from the outside of the lower box body 2 through the corresponding hole into the interior of the lower box body 2, and passes through the center hole of the front side wall of the rectangular box seat 29 to form a threaded connection with the blind hole screw seat 30. The tube body of the output hose 23 passes through the horizontal groove of the rectangular box seat 29 and the left and right grooves of the blind hole screw seat 30, and the screw end of the adjustment handle 24 and the top post 31 jointly squeeze the tube body of the output hose 23. The flow rate of the liquid in the output hose 23 is controlled by adjusting the depth of the adjustment handle 24 screwed into the blind hole screw seat 30. To prevent the flow rate regulator 10 from directly squeezing the output hose 23 and damaging the tube body, a protective sheath 32 is wrapped around the outer periphery of the output hose 23 that passes through the flow rate regulator 10.

[0029] Furthermore, the liquid reservoir 3 is provided with a transparent observation window 3.1 on the front or rear side of the lower housing 2, so that the liquid level of the simulated blood in the liquid reservoir 3 can be visually observed. The simulated blood in the liquid reservoir 3 is a 0.9% sodium chloride injection solution dyed red, so that the effect of the vascular anastomosis operation can be more intuitively observed.

[0030] Furthermore, the barrel and curled edge of the syringe jacket 11 are respectively locked in the corresponding syringe slot 2.1 inside the lower box body 2, the micro telescopic rotary reduction motor 13 is locked in the corresponding motor receiving slot 2.2 inside the lower box body 2, and the rechargeable battery 26 is locked in the corresponding battery receiving slot 2.3 inside the lower box body 2.

[0031] Furthermore, the docking ports of the various components of the connecting pipeline 9, between the liquid adding connector 4 and the 4# medical one-way valve 7, between the liquid return connector 5 and the 3# medical elbow 20, between the liquid outlet connector 6 and the 1# medical elbow 16, and between the liquid outlet port of the syringe jacket 11 and the port in the 1# medical three-way connector 14 are all connected by matching Luer interfaces.

[0032] Furthermore, the power management module 28 is provided with a charging interface 28 . 1 for charging the rechargeable battery, and the charging interface 28 . 1 is exposed to the outside of the lower box body 2 .

[0033] When the arterial blood supply simulation device is used, first connect the liquid outlet of the output hose 23 to a needle and then pierce the needle into the proximal end lumen of the main artery of the animal's isolated biological tissue and tie it tightly with sutures. Then turn on the power switch 27 to start the micro-telescopic rotary reduction motor 13. The micro-telescopic rotary reduction motor 13 drives the syringe plug 12 to slide back and forth in the syringe jacket 11. When the syringe plug 12 slides to the left, the simulated blood in the liquid storage tank 3 is sucked into the syringe jacket 11 from the liquid outlet connector 6 through the 1# medical elbow 16, the 1# medical one-way valve 17, and the lower port and middle port of the 1# medical three-way connector 14. When the syringe plug 12 slides to the right, the syringe plug 12 is injected into the syringe jacket 11. The simulated blood in the injector jacket 11 is supplied to the right port of the 2# medical tee connector 15 in sequence through the middle port and upper port of the 1# medical tee connector 14, the 2# medical elbow 18, and the 2# medical one-way valve 19. Then, a portion of the supplied liquid flows back to the liquid storage tank 3 through the middle port of the 2# medical tee connector 15, the 3# medical elbow 20, and the return liquid connector 5. The other portion of the supplied liquid is output outward in sequence through the left port of the 2# medical tee connector 15, the 3# medical one-way valve 22, and the output hose 23 to form a pressurized liquid supply (because the 3# medical elbow 20 is provided with a flow-limiting core rod 21 to increase the backflow resistance, the liquid flow rate and pressure flowing into the output hose 23 can be increased). Adjusting the motor speed regulator 25 changes the speed of the miniature telescopic rotary reduction motor 13, thereby varying the frequency of the reciprocating motion of the syringe stopper 12. Adjusting the flow rate regulator 10 changes the flow rate and pressure of the output liquid supply, thereby providing an intermittent pulsed liquid flow of 0 to 100 times per minute, thereby stimulating the arteries of isolated biological tissue and achieving arterial pulsation and blood flow. This allows the isolated animal tissue to be used to simulate live animal vascular anastomosis training. When the simulated blood in the liquid reservoir 3 decreases to a certain level, a syringe can be used to add simulated blood supplement to the liquid reservoir 3 via the medical one-way valve 7 and the liquid filling connector 4.

[0034] In addition, the arterial blood supply simulation device can also be used without using animal ex vivo biological tissue. The outlet of the output hose 23 can be directly connected to a training operating table with a simulated blood vessel, and the simulated blood vessel on the training operating table can be used to perform simulated training operations of vascular anastomosis.

[0035] The above-mentioned figures are only typical embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A compact arterial blood supply simulation device, characterized by: The arterial blood supply simulation device is provided with an upper cover body (1) and a lower box body assembly, the lower box body assembly is provided with a rectangular lower box body (2) with an open top surface and right side surface, the upper cover body (1) is a bent cover shell for covering the top surface and right side surface of the lower box body (2), and the upper cover body (1) and the lower box body (2) of the lower box body assembly are buckled together to form a closed rectangular shell; The lower box body is generally assembled, and a sealed liquid storage tank (3) is separated at the lower left position inside the lower box body (2). The liquid storage tank (3) contains simulated blood. The upper part of the liquid storage tank (3) is connected to a liquid adding joint (4) and a liquid return joint (5) extending upward. The lower right side of the liquid storage tank (3) is connected to a liquid outlet joint (6) extending rightward. A 4# medical one-way valve (7) connected to the liquid adding joint (4) is provided on the outside of the liquid storage tank (3) inside the lower box body (2). A liquid supply pipeline assembly is also provided on the outside of the liquid storage tank (3) inside the lower box body (2). The liquid supply pipeline assembly includes three parts: a syringe (8), a connecting pipeline (9) and a flow rate regulator (10); the syringe (8) is provided with a syringe jacket (11) which is horizontally installed above the liquid storage tank (3) and has a liquid outlet facing right, and a syringe rubber plug (12) which can slide back and forth is installed in the syringe jacket (11). A micro telescopic rotary reduction motor (13) is also installed at the left end of the syringe jacket (11) in the lower box body (2), and the telescopic end of the micro telescopic rotary reduction motor (13) is fixedly connected to the syringe rubber plug (12), and the micro telescopic rotary reduction motor (13) is driven by the micro telescopic rotary reduction motor. The speed reduction motor (13) drives the syringe rubber plug (12) to slide back and forth in the syringe jacket (11); the connecting pipeline (9) is provided with a vertically placed 1# medical three-way connector (14) and a horizontally placed 2# medical three-way connector (15) on the right side and above the syringe jacket (11), respectively. The middle port of the 1# medical three-way connector (14) is connected to the liquid outlet port of the syringe jacket (11), and the liquid outlet connector (6) of the liquid storage tank (3) passes through the upwardly bent 1# medical elbow (16) and the 1# medical one-way valve (17) in sequence and then connects to the 1# medical elbow (16). The lower port of the three-way connector (14) is connected, the upper port of the 1# medical three-way connector (14) is connected to the right port of the 2# medical three-way connector (15) after passing through the 2# medical elbow (18) bent to the left and the 2# medical one-way valve (19), the middle port of the 2# medical three-way connector (15) is connected to the return liquid connector (5) of the liquid storage tank (3) after passing through the 3# medical elbow (20) bent downward, and a movable flow limiting core rod (2) is also set in the horizontal section connecting the middle port of the 2# medical three-way connector (15) and the 3# medical elbow (20). 1), the left port of the 2# medical three-way connector (15) is connected to the liquid inlet of the output hose (23) after passing through the 3# medical one-way valve (22), and the tube body of the output hose (23) passes through the corresponding notch on the left side wall of the lower box body (2) to the left and then extends outward; the output hose (23) is provided with a flow rate regulator (10) on the pipeline inside the lower box body (2), and the flow rate regulator (10) adopts an extrusion type flow rate regulator that elastically squeezes the outer wall of the output hose (23), and the adjustment handle (24) of the flow rate regulator (10) extends to the outside of the lower box body (2); The lower box body is assembled inside the lower box body (2), and a motor speed regulator (25) matched with the micro telescopic rotary reduction motor (13) is installed. The speed regulating handle of the motor speed regulator (25) extends to the outside of the lower box body (2); the lower box body is assembled inside the lower box body (2) and a rechargeable battery (26), a power switch (27) and a power management module (28) are also installed. The button of the power switch (27) is exposed to the outside of the lower box body (2). The rechargeable battery (26) is provided with a circuit connected to the power management module (28) through the power switch (27). The power management module (28) is provided with a circuit connected to the motor speed regulator (25). The motor speed regulator (25) is provided with a circuit connected to the micro telescopic rotary reduction motor (13).

2. The compact arterial blood supply simulation device according to claim 1, characterized in that: The flow rate regulator (10) is provided with an open rectangular box seat (29) fixedly mounted inside the lower box body (2), and a middle hole and a horizontal groove that coincides with the middle hole and cuts inward are provided in the middle of the front side wall of the rectangular box seat (29), and an anti-rotation convex strip (29.1) is provided in the middle of the box bottom of the rectangular box seat (29); a blind hole screw seat (30) with an opening facing forward is placed in the rectangular box seat (29), and the side wall of the blind hole screw seat (30) is provided with four grooves, upper, lower, left and right, that are cut inward from the front end. When the blind hole screw seat (30) is placed in the rectangular box seat (29), the lower groove of the blind hole screw seat (30) is fixed on the anti-rotation convex strip (29.1) of the box bottom of the rectangular box seat (29), the screw hole of the blind hole screw seat (30) is opposite to the middle hole of the front side wall of the rectangular box seat (29), and the left and right grooves of the blind hole screw seat (30) are opposite to the left and right grooves of the rectangular box seat (29). The horizontal grooves are opposite; a top column (31) is placed at the bottom of the hole of the blind hole screw seat (30); the adjusting handle (24) of the flow rate regulator (10) is a handle with a screw at the front end, and the screw of the adjusting handle (24) extends from the outside of the lower box body (2) through the corresponding hole into the interior of the lower box body (2), and passes through the middle hole of the front side wall of the rectangular box seat (29) to form a threaded connection with the blind hole screw seat (30); the tube body of the output hose (23) passes through the gap between the screw end of the adjusting handle (24) and the top column (31) through the horizontal groove of the rectangular box seat (29) and the left and right grooves of the blind hole screw seat (30), and the tube body of the output hose (23) is squeezed by the screw end of the adjusting handle (24) and the top column (31), and the flow rate of the liquid in the output hose (23) is controlled by adjusting the depth of the adjusting handle (24) screwed into the blind hole screw seat (30).

3. The compact arterial blood supply simulation device according to claim 1, characterized in that: The portion of the output hose (23) that passes through the flow rate regulator (10) is further wrapped with a protective sheath (32) on the outer periphery of the hose.

4. The compact arterial blood supply simulation device according to claim 1, characterized in that: The liquid storage box (3) is provided with a transparent observation window (3.1) on the front side or the rear side of the lower box body (2).

5. The compact arterial blood supply simulation device according to claim 1, characterized in that: The simulated blood in the liquid storage tank (3) is 0.9% sodium chloride injection dyed red.

6. The compact arterial blood supply simulation device according to claim 1, characterized in that: The barrel and the curling edge of the syringe jacket (11) are respectively locked in the corresponding syringe slots (2.1) inside the lower box body (2), the micro telescopic rotary reduction motor (13) is locked in the corresponding motor receiving slot (2.2) inside the lower box body (2), and the rechargeable battery (26) is locked in the corresponding battery receiving slot (2.3) inside the lower box body (2).

7. The compact arterial blood supply simulation device according to claim 1, characterized in that: The docking ports of the various components of the connecting pipeline (9), the liquid adding connector (4) and the 4# medical one-way valve (7), the liquid return connector (5) and the 3# medical elbow (20), the liquid outlet connector (6) and the 1# medical elbow (16), and the liquid outlet port of the syringe jacket (11) and the middle port of the 1# medical three-way connector (14) are all connected by mutually matching Luer interfaces.

8. The compact arterial blood supply simulation device according to claim 1, characterized in that: The power management module (28) is provided with a charging interface (28.1) capable of charging the rechargeable battery (26), and the charging interface (28.1) is exposed to the outside of the lower box body (2).

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