An injection simulation model for nursing professional teaching

Abstract

The invention relates to the technical field of medical training equipment, and specifically discloses an injection simulation model for nursing professional teaching, comprising a simulation model and a blood vessel model, wherein the blood vessel model is located inside the simulation model, and further comprising: a cavity, wherein the cavity is opened inside the simulation model, and the blood vessel model is located inside the cavity; a jet component, wherein the jet component is installed on both sides of the cavity, and the jet component changes the running of the blood vessel model by blowing the blood vessel model through airflow; and a random component, wherein the random component is installed at the bottom of the simulation model, and the cavity can ensure that the blood vessel model is in an active state, thereby simulating the situation where the blood vessel is free in reality. Secondly, the combined use of the jet component and the random component can randomly generate different runnings for the blood vessel model, simulating the diversity and uncertainty of the blood vessels in the actual clinical puncture process, and the trainers can timely change the puncture technique according to the actual situation of the blood vessel model during training, and can train their ability to respond in time.

Description

Technical Field

[0001] The invention relates to the technical field of medical training equipment, in particular to an injection simulation model for nursing professional teaching. Background Art

[0002] In the field of nursing teaching, the injection simulation model is an indispensable and important teaching tool. It provides a highly simulated practice environment for nursing professionals, effectively helping to cultivate their skilled and accurate injection skills. By using this injection simulation model, the efficiency of nursing teaching has been significantly improved. Trainers can practice repeatedly on the simulation model without being restricted by time and place, greatly increasing the opportunity to practice.

[0003] Injection refers to the use of specific medical devices, such as needles or catheters, to penetrate the skin and accurately enter the blood vessel cavity to achieve the purpose of blood collection, drug infusion, fluid resuscitation or hemodynamic monitoring. In order to improve the accuracy of vascular puncture, medical staff need to receive professional training and practice. By simulating real scenes, using professional equipment, and practicing repeatedly, you can continuously improve your operating skills and coping capabilities.

[0004] Most of the existing vascular training models use human models, and the course and position of the vascular models are fixed. However, due to differences between people in the actual operation process, the course and degree of freedom of the blood vessels are different. This leads to a relatively simple training scenario for existing training devices during vascular puncture training.

[0005] Therefore, we propose an injection simulation model for nursing professional teaching. Summary of the invention

[0006] The purpose of the present invention is to provide an injection simulation model for nursing professional teaching, so as to solve the problem that the scenes simulated by the existing vascular training models mentioned in the above background technology are relatively single.

[0007] To achieve the above object, the present invention provides the following technical solution: an injection simulation model for teaching nursing professional, comprising a simulation model and a blood vessel model, wherein the blood vessel model is located inside the simulation model, and further comprising:

[0008] A cavity is opened inside the simulation model, and the blood vessel model is located inside the cavity;

[0009] The jet parts are installed on both sides of the cavity, and the jet parts change the path of the blood vessel model by blowing the blood vessel model with airflow;

[0010] Random parts are installed at the bottom of the simulation model to ensure the randomness of changes in the vascular model.

[0011] The air vent is opened on the top of the simulation model, and the air vent releases the gas generated by the jet part.

[0012] Among them, a box is installed at the bottom of the simulation model, and the jet parts and random parts are installed inside the box;

[0013] The jet component comprises an air pump fixed in the box body, the air outlet end of the air pump is connected with an air outlet pipe, a plurality of jet pipes are installed on the side of the air outlet pipe, the jet pipes are connected with the cavity, and the random component is installed between the jet pipes and the air outlet pipes.

[0014] Among them, the random parts include a transfer box installed between the injection pipe and the outlet pipe, a sealing belt is slidably installed inside the transfer box, a driven wheel is arranged on the top of the sealing belt, the driven wheel is rotatably installed on the top of the transfer box, a plurality of perforations are opened on the surface of the sealing belt, a driving wheel is installed on the bottom of the sealing belt, a motor is fixedly installed on the end of the driving wheel, and the motor is fixed inside the box.

[0015] The diameters of the plurality of through holes and the intervals between adjacent through holes are all different.

[0016] Among them, an adjustment part is installed at the air inlet end of the air pump, which changes the position of the blood vessel model in the cavity. A detection cavity is opened at the tail of the simulation model, and a detection part is installed inside the detection cavity. The detection part detects whether the blood vessel puncture is successful.

[0017] Among them, the detection part includes an indicator light fixed on the outside of the box and an airbag fixed inside the detection cavity. The wall thickness of the airbag is smaller than the wall thickness of the blood vessel model, and the airbag is connected to the blood vessel model. A first contact block is fixedly installed on the top of the airbag, and a second contact block is fixedly installed on the top of the detection cavity. When the first contact block and the second contact block are in contact, the indicator light lights up.

[0018] The regulating member includes a driving tube fixed to the air inlet end of the air pump, an air inlet pipe is fixedly installed on one side of the driving tube, a first valve is fixedly installed on the outside of the air inlet pipe, a second valve is fixedly installed on the outside of the driving tube, a connecting member is connected to one end of the driving tube away from the air pump, a top of the connecting member is fixed to the blood vessel model, and the connecting member drives the blood vessel model to move when the driving tube is connected to the air pump;

[0019] A reel is installed at one end of the blood vessel model away from the airbag, and the unused blood vessel model is wound around the outside of the reel.

[0020] The connecting piece includes a piston cylinder fixed at the end of the driving tube, a piston rod is slidably installed inside the piston cylinder, a connecting rod is fixedly installed at one end of the piston rod away from the piston cylinder, and the top of the connecting rod is fixed on the outside of the blood vessel model.

[0021] Among them, a tissue layer is fixedly installed on the outside of the cavity, the tissue layer is a porous structure, a drain pipe is fixedly installed on the top of the jet pipe, the other end of the drain pipe is connected to the tissue layer, a hand valve is fixedly installed on the outside of the drain pipe, and a drain pipe is installed at the bottom of the tissue layer.

[0022] A receiving hole is opened inside the simulation model, and the unused blood vessel model is located in the receiving hole. The diameter of the receiving hole is much larger than the diameter of the blood vessel model.

[0023] The present invention has at least the following beneficial effects:

[0024] The cavity can ensure that the vascular model is in an active state, thereby simulating the situation of free blood vessels in reality. Secondly, the combination of jet parts and random parts can randomly generate different routes for the vascular model, simulating the diversity and uncertainty of blood vessels in the actual clinical puncture process. During training, trainers can change the puncture technique in time according to the actual situation of the vascular model, which can train their ability to respond in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of the box of the present invention;

[0027] Figure 3 This is a schematic diagram of the cross-sectional structure of the cavity of the present invention;

[0028] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0029] Figure 5 This is a schematic diagram of the connection structure of the air outlet end of the air pump of the present invention;

[0030] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0031] Figure 7 This is a schematic diagram of the longitudinal section structure of the cavity of the present invention;

[0032] Figure 8 It is a schematic diagram of the air inlet connection structure of the air pump of the present invention.

[0033] In the figure: 1. simulation model; 2. blood vessel model; 3. cavity; 4. jet component; 5. random component; 6. air vent; 7. box; 8. air pump; 9. air outlet pipe; 10. jet pipe; 11. transfer box; 12. sealing belt; 13. driven wheel; 14. perforation; 15. driving wheel; 16. motor; 17. adjustment component; 18. detection cavity; 19. detection component; 20. indicator light; 21. air bag; 22. first contact block; 23. second contact block; 24. drive pipe; 25. air inlet pipe; 26. first valve; 27. second valve; 28. connecting component; 29. ​​winding wheel; 30. piston cylinder; 31. piston rod; 32. connecting rod; 33. tissue layer; 34. drain pipe; 35. hand valve; 36. drain pipe; 37. receiving hole. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1

[0036] See also Figures 1 to 8 The present invention provides a technical solution: an injection simulation model for teaching nursing professionals, comprising: a simulation model 1. In this embodiment, the simulation model 1 is an arm model, and a blood vessel model 2 is arranged inside the simulation model 1. The blood vessel model 2 can be a radial artery or a forearm cephalic vein, etc.

[0037] Specifically, a long cavity 3 is opened inside the simulation model 1, and the blood vessel model 2 is arranged in the cavity 3. Therefore, the blood vessel model 2 located in the cavity 3 is not completely fixed, but can move within a certain range in the cavity 3, thereby simulating the free state of the blood vessel and restoring the puncture scene more realistically. During training, the trainees can perform puncture training on the movable blood vessel model 2, which can better cultivate the trainees' practical ability.

[0038] Jet components 4 are installed on both sides of the cavity 3. The main function of the jet components 4 is to be able to spray into the cavity 3, and the ejected airflow acts on the blood vessel model 2 in the cavity 3, so that the shape of the blood vessel model 2 changes under the action of the airflow, thereby simulating different blood vessel courses. At the same time, a random component 5 is installed at the bottom of the simulation model 1. The random component 5 is used to ensure randomness when changing the course of the blood vessel model 2. That is, before training, the trainer can operate the jet components 4 and the random component 5, so that the blood vessel model 2 in the cavity 3 randomly generates different courses, simulating the diversity and uncertainty of blood vessels in the actual clinical puncture process. During training, the trainer can change the puncture technique in time according to the actual situation of the blood vessel model 2, and can train its ability to respond in time.

[0039] A box body 7 is fixedly installed at the bottom of the simulation model 1, and the random parts 5 and the jet parts 4 are both installed in the box body 7. An air vent 6 is also provided on the top of the simulation model 1, and the air vent 6 is interconnected with the cavity 3. When the jet parts 4 and the random parts 5 are in motion, gas will enter the cavity 3. In order to ensure the integrity of the cavity 3, excess gas will be discharged from the air vent 6.

[0040] The jet component 4 includes an air pump 8 fixed in the box body 7, and an air outlet pipe 9 is fixedly installed at the air outlet end of the air pump 8, and a plurality of jet pipes 10 are installed at the air outlet end of the air outlet pipe 9, each jet pipe 10 is connected to the cavity 3. In this embodiment, six jet pipes 10 are set, and the six jet pipes 10 are symmetrically distributed on the front and back sides of the simulation model 1. Therefore, when jetting, the air pump 8 starts to work. When the air pump 8 is working, the airflow ejected from the air outlet end of the air pump 8 is ejected from the jet pipe 10 through the air outlet pipe 9. The airflow ejected from the jet pipe 10 acts on the blood vessel model 2, and the blood vessel model 2 changes its shape after being affected by the airflow.

[0041] The random component 5 includes a transfer box 11 fixed between the jet pipe 10 and the air outlet pipe 9. An annular sealing belt 12 is slidably installed inside the transfer box 11, and a plurality of perforations 14 are provided on the sealing belt 12. In the present embodiment, the distances and sizes of the perforations 14 are the same. At the same time, a driven wheel 13 is rotatably installed on the top of the transfer box 11, and a driving wheel 15 is installed at the bottom of the sealing belt 12. A motor 16 is fixedly installed on the input end of the driving wheel 15. When the jet component 4 starts to jet, the airflow ejected from the air outlet pipe 9 will first enter the transfer box 11. When the jet component 4 starts to move, the random component 5 can move at the same time. When the random component 5 moves, the motor 16 drives the driving wheel 15 to rotate, and the driving wheel 15 drives the sealing belt 12 to rotate. When the sealing belt 12 rotates, the perforations 14 on the sealing belt 12 and the air inlet end of the jet pipe 10 will intersect with different areas. When the intersecting area is the largest, the sealing belt 12 is rotated. The sealing tape 12 completely blocks the air inlet end of the jet tube 10. At this time, the gas in the transfer box 11 will not be ejected from the jet tube 10. When the interleaving area is the smallest, that is, the perforation 14 is completely aligned with the air inlet end of the jet tube 10, the gas in the transfer box 11 is most likely to enter the jet tube 10. When the pressure of the air pump 8 remains unchanged, the smaller the interleaving area between the two (except when the interleaving area is the largest), the larger the cross-section of the air flow between the perforation 14 and the jet tube 10, and the smaller the air flow ejected from the jet tube 10. Therefore, when the initial position of each sealing tape 12 is different, the air flow ejected from each jet tube 10 is different. When the jet tube 10 with a large air flow acts on the blood vessel model 2, the deformation of the blood vessel model 2 is large, and vice versa. Therefore, when the random component 5 and the jet component 4 act at the same time, the blood vessel model 2 can be randomly changed into different shapes, thereby simulating the different blood vessel courses of each patient.

[0042] It should be noted that the spacing between the perforations 14 and the size of the perforations 14 may also be different. In this case, the degree of randomness is more obvious. Secondly, when the airflow acts on the vascular model 2, the deformation of the vascular model 2 will pull the vascular model 2 at both ends. In order to ensure that the blowing force of the airflow can completely change the state of the vascular model 2, a receiving hole 37 is opened inside the simulation model 1. The vascular model 2 that is not located in the cavity 3 is located in the receiving hole 37, and the diameter of the receiving hole 37 is much larger than the diameter of the vascular model 2. At this time, the friction between the vascular model 2 and the simulation model 1 is reduced, ensuring that the airflow can change the state of the vascular model 2.

[0043] Embodiment 2

[0044] During the training process, it is considered a correct operation when the puncture needle is inserted into the blood vessel. However, in the actual training process, the operator can only judge whether the puncture is accurate by the feel during the puncture process, and each trainee has different feelings, making it difficult to accurately judge the success or failure of the puncture. Therefore, a detection cavity 18 is provided at the rear end of the simulation model 1, and a detection component 19 is installed inside the detection cavity 18. The detection component 19 can more accurately judge the puncture result after the puncture.

[0045] First, an indicator light 20 is fixedly installed on the outside of the box 7, and secondly, an airbag 21 is fixedly installed inside the detection cavity 18. The airbag 21 is connected to the blood vessel model 2, and the airbag 21 and the blood vessel model 2 are made of the same material, such as rubber, but the wall thickness of the airbag 21 is smaller than the wall thickness of the blood vessel model 2. At the same time, a first contact block 22 is fixedly installed on the top of the airbag 21, and a second contact block 23 is fixedly installed on the top of the detection cavity 18. The first contact block 22 and the second contact block 23 are similar to contact switches and are connected in series in the circuit of the indicator light 20. When the first contact block 22 and the second contact block 23 are in contact, the circuit of the indicator light 20 is connected, and the indicator light 20 will light up.

[0046] Specifically, during puncture training, the airbag 21 is first filled with water, and the water in the airbag 21 and the water in the puncture needle are in a balanced state, and then a specified volume of liquid is injected into the puncture needle. When the liquid is completely injected into the blood vessel model 2, the liquid in the blood vessel model 2 will enter the airbag 21, the liquid in the airbag 21 increases, and the airbag 21 expands. When the airbag 21 expands, it drives the first contact block 22 and the second contact block 23 to approach each other. When the two are in contact, the liquid in the injection needle is completely injected into the blood vessel model 2, and the puncture is successful. After the puncture, the puncture needle does not enter the blood vessel model 2 or only a part of the puncture needle enters the blood vessel. When the liquid in the injection needle is injected, part of the liquid will remain on the outside of the blood vessel model 2. At this time, the liquid in the airbag 21 and the blood vessel model 2 will decrease, and the expansion degree of the airbag 21 will also decrease successively. At this time, the first contact block 22 and the second contact block 23 are not in contact, and the indicator light 20 will not light up. Therefore, the puncture effect can be judged more conveniently and accurately according to whether the indicator light 20 is on.

[0047] A tissue layer 33 is arranged on the outside of the cavity 3. The tissue layer 33 is arranged in a porous structure. A drain pipe 36 is installed at the bottom of the tissue layer 33. At the same time, a drain pipe 34 is installed on the top of the jet tube 10. A hand valve 35 is installed on the drain pipe 34. One end of the drain pipe 34 is connected with the jet tube 10, and the other end of the drain pipe 34 is connected with the tissue layer 33. Therefore, during the puncture training, the trainer needs to pass through the tissue layer 33 before puncturing into the blood vessel model 2 in the cavity 3. When the puncture fails, the liquid in the puncture needle will flow into the tissue layer 33 or the cavity 3. The porous structure of the tissue layer 33 can temporarily store the liquid, and the liquid injected into the cavity 3 will eventually flow into the tissue layer 33 under the action of its own gravity. Therefore, the liquid remaining in the tissue layer 33 will be discharged through the drain pipe 36. At the same time, the jet component 4 can be started and the hand valve 35 can be opened. At this time, the airflow ejected by the jet element 4 will enter the drain pipe 34, and pressurize the tissue layer 33 and the cavity 3 through the drain pipe 34, so that the liquid in the tissue layer 33 can be discharged more fully and completely.

[0048] Embodiment 3

[0049] During training, the blood vessel model 2 needs to be punctured frequently. After a long period of training, the life of the blood vessel model 2 at the puncture site can effectively avoid the possibility of leakage. Therefore, an adjustment member 17 is installed at the air inlet end of the air pump 8. The adjustment member 17 can change the position of the blood vessel model 2 to avoid always puncturing a specific position of the blood vessel model 2.

[0050] Specifically, first, a driving tube 24 is fixedly installed at the air inlet end of the air pump 8, an air inlet pipe 25 is fixedly installed on one side of the driving tube 24, a first valve 26 is fixedly installed on the outer side of the air inlet pipe 25, and a second valve 27 is fixedly installed on the outer side of the driving tube 24, and at the same time, a connecting piece 28 is fixedly installed at the end of the driving tube 24 away from the air pump 8, and the top of the connecting piece 28 is fixed to the blood vessel model 2. The connecting piece 28 is fixed to the piston cylinder 30 at the end of the driving tube 24, and a piston rod 31 is slidably installed inside the piston cylinder 30, and a connecting rod 32 is fixedly installed on the end of the piston rod 31, and the top of the connecting rod 32 is fixed to the blood vessel model 2.

[0051] In addition, a winding wheel 29 is installed at the tail of the blood vessel model 2 , and the unused blood vessel model 2 is wound around the outside of the winding wheel 29 .

[0052] Through the above technical solution, when the position of the blood vessel model 2 needs to be changed, the first valve 26 is closed and the second valve 27 is opened. When the second valve 27 is opened, the air pump 8 inhales air through the driving tube 24, so that the gas in the piston cylinder 30 is reduced, and a negative pressure is formed in the piston cylinder 30. Under the action of atmospheric pressure, the piston rod 31 is driven to slide in the piston cylinder 30. When the piston rod 31 slides, it drives the connecting rod 32 to move. The movement of the connecting rod 32 pulls the blood vessel model 2 to move. When the blood vessel model 2 moves, the unused blood vessel model 2 on the winding wheel 29 is pulled out. At this time, the place where the blood vessel model 2 is often punctured is adjusted to avoid long-term puncture of one place causing water leakage of the blood vessel model 2. After the position of the blood vessel model 2 is changed, the first valve 26 is opened, the second valve 27 is closed, and the air pump 8 normally extracts air through the air inlet pipe 25.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection simulation model for teaching nursing professionals, comprising a simulation model (1) and a blood vessel model (2), wherein the blood vessel model (2) is located inside the simulation model (1), and is characterized in that: Also includes: A cavity (3), wherein the cavity (3) is opened inside the simulation model (1), and the blood vessel model (2) is located inside the cavity (3); An air jet component (4), the air jet component (4) being installed on both sides of the cavity (3), and the air jet component (4) changes the path of the blood vessel model (2) by blowing the blood vessel model (2) with airflow; A random component (5), the random component (5) being installed at the bottom of the simulation model (1), and the random component (5) ensuring the randomness of the change of the blood vessel model (2); A vent hole (6), the vent hole (6) being provided at the top of the simulation model (1), and the vent hole (6) being used to discharge the gas generated by the jet element (4); The random component (5) comprises a transfer box (11) installed between the air injection pipe (10) and the air outlet pipe (9), a sealing belt (12) is slidably installed inside the transfer box (11), a driven wheel (13) is arranged on the top of the sealing belt (12), and the driven wheel (13) is rotatably installed on the top of the transfer box (11), a plurality of through holes (14) are opened on the surface of the sealing belt (12), a driving wheel (15) is installed at the bottom of the sealing belt (12), and a motor (16) is fixedly installed at the end of the driving wheel (15), and the motor (16) is fixed inside the box (7); The diameters of the plurality of perforations (14) and the spacings between adjacent perforations (14) are all different; The jetting component (4) comprises an air pump (8) fixed in a box (7); an adjusting component (17) is installed at the air inlet end of the air pump (8); the adjusting component (17) changes the position of the blood vessel model (2) in the cavity (3); a detection cavity (18) is provided at the tail of the simulation model (1); a detection component (19) is installed inside the detection cavity (18); the detection component (19) detects whether the blood vessel puncture is successful; The detection member (19) comprises an indicator light (20) fixed on the outside of the box (7) and an air bag (21) fixed inside the detection chamber (18); the wall thickness of the air bag (21) is smaller than the wall thickness of the blood vessel model (2), and the air bag (21) is connected to the blood vessel model (2); a first contact block (22) is fixedly mounted on the top of the air bag (21), and a second contact block (23) is fixedly mounted on the top of the detection chamber (18); when the first contact block (22) and the second contact block (23) are in contact, the indicator light (20) lights up.

2. The injection simulation model for nursing professional teaching according to claim 1 is characterized in that: A box (7) is installed at the bottom of the simulation model (1), and the jet component (4) and the random component (5) are both installed inside the box (7); The air outlet end of the air pump (8) is connected to an air outlet pipe (9), a plurality of jet pipes (10) are installed on the side of the air outlet pipe (9), the jet pipes (10) are connected to the cavity (3), and the random component (5) is installed between the jet pipes (10) and the air outlet pipe (9).

3. The injection simulation model for nursing professional teaching according to claim 1 is characterized in that: The regulating member (17) comprises a driving tube (24) fixed to the air inlet end of the air pump (8), an air inlet pipe (25) being fixedly mounted on one side of the driving tube (24), a first valve (26) being fixedly mounted on the outside of the air inlet pipe (25), and a second valve (27) being fixedly mounted on the outside of the driving tube (24), a connecting member (28) being connected to one end of the driving tube (24) away from the air pump (8), the top of the connecting member (28) being fixed to the blood vessel model (2), and the connecting member (28) driving the blood vessel model (2) to move when the driving tube (24) is connected to the air pump (8); A winding wheel (29) is installed at one end of the blood vessel model (2) away from the air bag (21), and the unused blood vessel model (2) is wound around the outside of the winding wheel (29).

4. The injection simulation model for nursing professional teaching according to claim 3 is characterized in that: The connecting member (28) comprises a piston cylinder (30) fixed to the end of the driving tube (24), a piston rod (31) being slidably mounted inside the piston cylinder (30), a connecting rod (32) being fixedly mounted on one end of the piston rod (31) away from the piston cylinder (30), and the top of the connecting rod (32) being fixed to the outside of the blood vessel model (2).

5. The injection simulation model for nursing professional teaching according to claim 1 is characterized in that: A tissue layer (33) is fixedly mounted on the outside of the cavity (3), the tissue layer (33) being a porous structure, a drain pipe (34) is fixedly mounted on the top of the jet pipe (10), the other end of the drain pipe (34) being connected to the tissue layer (33), a hand valve (35) is fixedly mounted on the outside of the drain pipe (34), and a drain pipe (36) is mounted on the bottom of the tissue layer (33).

6. The injection simulation model for nursing professional teaching according to claim 1, characterized in that: The simulation model (1) is provided with a receiving hole (37) inside, and the unused blood vessel model (2) is located in the receiving hole (37), and the diameter of the receiving hole (37) is much larger than the diameter of the blood vessel model (2).

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