CN114639293A - Display device for coronary atherosclerosis model - Google Patents

Abstract

The invention relates to the technical field of display devices, in particular to a display device for a coronary atherosclerosis model, which comprises a heart main body and a coronary artery demonstration main body; the coronary artery demonstration main body comprises: the simulated coronary artery blood vessel is arranged in a coronary sulcus of the heart main body, two ends of the simulated coronary artery blood vessel are respectively connected with the stretching piece, and the simulated coronary artery blood vessel comprises an outer tube and an inner tube; the elastic bag bodies are arranged between the inner pipe and the outer pipe in a penetrating way, the communication positions of the elastic bag bodies and the inner pipe are provided with adjusting films, and the adjusting films are provided with a plurality of through holes; a dispensing piece is arranged at the communication part of the elastic bag body and the outer tube, and comprises a suction piece and an auxiliary piece; a simulated circulation body disposed within the inner tube; an auxiliary learning piece is filled between the inner tube and the simulation circulating body. The device is designed according to the occurrence principle of coronary atherosclerosis, and the simulation of coronary atherosclerosis is realized through the coronary artery demonstration main body, so that the effects of displaying and learning are improved.

Description

Display device for coronary atherosclerosis model

Technical Field

The invention relates to the technical field of display devices, in particular to a display device for a coronary atherosclerosis model.

Background

Atherosclerosis (Atherosclerosis) is the most common and important type of arteriosclerosis, characterized by a lipid-like deposition of the intima of the affected arteries, an accumulation of complex carbohydrates, a consequent proliferation of fibrous tissue and a calcium deposition, and lesions in the medial layer of the arteries, resulting in heart disease caused by myocardial ischemia, hypoxia or necrosis. The disease mainly involves large and medium-sized muscle elasticity type arteries, most of which are aorta, coronary artery and cerebral artery, and often causes serious consequences such as lumen occlusion or bleeding due to rupture of vessel wall. Atherosclerosis occurring in the coronary arteries, known as coronary atherosclerosis (coronary atherosclerosis), is the most common stenotic coronary disease, particularly in the extramuscular coronary branches, and the proximal segment of the coronary artery is better developed because it is closer to the ventricle than all the organ arteries and thus undergoes the most systolic pressure stroke; furthermore, the coronary vessel tree is subject to large shear stress due to the change in direction due to the shape of the heart.

In order to let the students of medical college know the coronary atherosclerosis disease, school teachers usually utilize the display device to show the coronary atherosclerosis model for students, the students can conveniently learn, the model of the atherosclerosis result is shown in the prior art, only the effect picture after the student hardens can be visually shown at the moment, the occurrence process of the coronary atherosclerosis is unknown by the model, the effect of the model display of the teacher is not obvious at the moment, so the model display device capable of simulating the occurrence process of the coronary atherosclerosis is needed, and the model display device is used as a demonstration basis for explanation and display, and further the learning efficiency is improved.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the display device for the coronary atherosclerosis model, the structural design of the device is carried out according to the occurrence principle of the coronary atherosclerosis, the simulation of the coronary atherosclerosis is realized through the coronary artery demonstration main body, and the display and learning effects are improved.

In order to solve the technical problems, the invention adopts the following technical scheme:

a display device for a coronary atherosclerosis model comprises a heart body and a coronary artery demonstration body, wherein the coronary artery demonstration body is arranged on the heart body;

the coronary artery demonstration body comprises:

the simulated coronary artery blood vessel is arranged in a coronary sulcus of the heart main body, two ends of the simulated coronary artery blood vessel are respectively connected with the stretching piece, and the simulated coronary artery blood vessel comprises an outer tube and an inner tube sleeved in the outer tube;

the elastic bag bodies are arranged between the inner pipe and the outer pipe in a penetrating way, adjusting films are arranged at the communication positions of the elastic bag bodies and the inner pipe, and a plurality of through holes are formed in the adjusting films; a dispensing part for controlling simulation of coronary atherosclerosis is arranged at the communication position of the elastic balloon and the outer tube, and comprises a suction part and an auxiliary part;

the simulation circulating body is arranged in the inner pipe and comprises a transparent shell, a plurality of magnetic strips and a plurality of colored lamp wires, the colored lamp wires are arranged in the transparent shell side by side, and the magnetic strips are uniformly arranged at the top of the transparent shell;

an auxiliary learning piece is filled between the inner pipe and the simulation circulating body;

the heart main part with coronary artery demonstration main part all sets up in the backup pad, the backup pad sets up in the show case.

Preferably, the auxiliary learning member comprises a simulated platelet block, a simulated leukocyte ball and simulated fat, the sizes and the colors of the simulated platelet block, the simulated leukocyte ball and the simulated fat are different, and the simulated leukocyte ball is a magnetic ball.

Preferably, the adjusting membrane is an organ type adjusting membrane, and the through hole on the adjusting membrane only allows the simulated leukocyte ball and the simulated fat to pass through.

Preferably, the stretching member comprises two first motors, the first motors are arranged on the supporting plate, and output shafts of the two first motors are respectively connected with two ends of the simulated coronary artery blood vessel.

Preferably, the suction member includes:

an air pump disposed on the support plate;

one end of each suction pipe penetrates through the outer pipe and is communicated with the elastic bag body, and the other ends of the suction pipes are communicated with the suction pump together;

and the filter screens are arranged at two ends of the air extracting pump.

Preferably, the auxiliary member includes:

the auxiliary box is filled with magnetic powder, and the magnetic powder can be adsorbed on the simulated leukocyte balls;

one end of each of the communicating pipes is commonly connected with the auxiliary box in a through mode, the other end of each of the communicating pipes penetrates through the outer pipe and the elastic bag body in a through mode, limiting plates are arranged in the communicating pipes, and every two limiting plates are commonly connected with one limiting part.

Preferably, the stopper includes:

a second motor disposed on the support plate;

the driving wheel is connected with an output shaft of the second motor, and a driven wheel is meshed with the driving wheel;

the rotating rods are sleeved and fixedly connected to the driven wheel, spiral plates are respectively arranged on the rotating rods positioned on two sides of the driven wheel, and the two spiral plates are arranged in a mirror symmetry manner;

and the moving block is sleeved on the rotating rod and is in threaded connection with the spiral plate, and one end of the limiting plate is connected to the moving block.

Preferably, the supporting plate is connected with the display box in a sliding mode, the display box is symmetrically screwed with screw rods, two sliding blocks are symmetrically arranged on the screw rods, the sliding blocks are connected with the supporting plate together, and the top ends of the screw rods are respectively connected with a third motor.

Compared with the prior art, the invention has the beneficial effects that:

the invention has the following action principle: the colored lamp lines have different colors, and the colored lamp lines emit different lights to represent that different nutrients run in the artery, for example, red platelets emit light through the red colored lamp lines, yellow fat emits light through the yellow colored lamp lines, blue water emits light through the blue colored lamp lines, white cells emit light through the white colored lamp lines, and demonstration of transported substances in the artery is realized through the colored lamp lines;

during or after the demonstration of the color lamp line, simulating and demonstrating coronary atherosclerosis, firstly, under the action of an air pump, simulating fat enters the elastic bag body through the through hole on the adjusting membrane, the elastic bag body is inflated and expanded along with the continuous filling of the simulating fat, and the space of the inner tube is gradually reduced by the inflated elastic bag body, so that the human artery is gradually hindered from conveying transported substances; the process is that the simulated fat enters the inner wall of the blood vessel through epithelial cells of the aging blood vessel and is accumulated on the inner wall;

in the process that fat in the elastic bag body is gradually accumulated, the simulated leukocyte balls adsorbed on the magnetic strips are sucked into the elastic bag body along with the increase of the action of the air suction pump, at the moment, the switch of the second motor is controlled, magnetic powder positioned in the auxiliary box enters the elastic bag body through the communicating pipe and is adsorbed on the simulated leukocyte balls, the elastic bag body continues to expand along with the filling of the simulated leukocyte balls and the magnetic powder into the elastic bag body, and the space of the inner pipe is completely blocked; the simulation principle is as follows: after fat is gradually accumulated, the function of white blood cells is shown, the white blood cells enter the inner wall of a blood vessel through epithelial cells of an aged blood vessel, then the fat is absorbed into a human body, but the white blood cells are also swollen after being absorbed and form large and hard atheromatous plaques under the blood vessel, the phenomenon is called coronary atherosclerosis, in the demonstration, the atheromatous plaques are embodied through magnetic powder, at the moment, the occurrence process of the coronary atherosclerosis can be clearly observed in the demonstration, and the teaching significance is achieved.

Compared with the display device in the prior art, the display device is displayed from the occurrence process of coronary atherosclerosis, and the reason of coronary atherosclerosis is visually demonstrated from the change on the dynamic artery structure, so that a favorable basis is provided for students to learn.

Drawings

FIG. 1 is a cross-sectional view of the internal structure of a coronary artery demonstration main body of the display device for the coronary artery atherosclerosis model of the invention;

FIG. 2 is a schematic view of the upper structure of the supporting plate of the display device for the model of coronary atherosclerosis according to the invention;

FIG. 3 is a schematic diagram of the internal structure of the simulation loop body of the display device for the coronary atherosclerosis model of the invention;

FIG. 4 is a schematic view of the connection structure between the supporting plate and the display box of the display device for coronary atherosclerosis model of the invention.

Description of the reference numerals:

1. a cardiac subject; 2. simulating coronary vessels; 3. an outer tube; 4. an inner tube; 5. an elastic bladder body; 6. a conditioning film; 7. simulating a circulating body; 8. a housing; 9. a magnetic strip; 10. a color light wire; 11. a support plate; 12. a display box; 13. simulating a platelet; 14. a mock leukocyte sphere; 15. simulating fat; 16. a first motor; 17. a suction tube; 18. an air pump; 19. filtering with a screen; 20. an auxiliary tank; 21. a communicating pipe; 22. a limiting plate; 23. a second motor; 24. a driving wheel; 25. a driven wheel; 26. a rotating rod; 27. a spiral plate; 28. a moving block; 29. a screw; 30. a slider; 31. a third motor.

Detailed Description

The following detailed description of specific embodiments of the invention is provided, but it should be understood that the scope of the invention is not limited to the specific embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. The experimental methods in the examples of the present invention are all conventional methods unless otherwise specified.

A display device for a coronary atherosclerosis model comprises a heart body 1 and a coronary artery demonstration body, wherein the coronary artery demonstration body is arranged on the heart body 1; the heart main body 1 shows the position of the main occurrence of coronary atherosclerosis to students, and the coronary artery demonstration main body shows the dynamic occurrence process of coronary atherosclerosis to students;

the coronary artery demonstration main body comprises:

the simulation coronary artery blood vessel 2, the development process of coronary atherosclerosis is carried on in the simulation coronary artery blood vessel 2, the simulation coronary artery blood vessel 2 is a transparent and elastic simulation blood vessel, it is set up in the coronary sulcus of the heart body 1, its both ends are connected with tensile member separately, the tensile member is used for pulling the simulation coronary artery blood vessel 2, the simulation coronary artery blood vessel 2 includes the outer tube 3 and inner tube 4 set in outer tube 3, the design of outer tube 3 and inner tube 4 is convenient for the simulation teaching;

the blood vessel simulator comprises a plurality of elastic bag bodies 5, wherein openings are formed in the elastic bag bodies 5, sealing covers are embedded in the openings and are arranged between an inner tube 4 and an outer tube 3 in a penetrating mode, the elastic bag bodies 5 are connected with the inner tube 4 and the outer tube 3, adjusting films 6 are arranged at the positions where the elastic bag bodies 5 are communicated with the inner tube 4, the adjusting films 6 are organ-type adjusting films 6 and are in organ types in a natural state, through holes in the adjusting films 6 only allow simulated leukocyte balls 14 and simulated fat 15 to penetrate through, a plurality of through holes are formed in the adjusting films 6, the through holes are opened after the adjusting films 6 are stretched, a stretching piece is adopted to stretch simulated coronary artery blood vessels 2, and the through holes of the adjusting films 6 are driven to be opened at the moment; the stretching piece comprises two first motors 16, the first motors 16 are arranged on the supporting plate 11, output shafts of the two first motors 16 are respectively connected with two ends of the simulated coronary artery vessel 2, after the two first motors 16 run, the output shafts of the first motors 16 rotate, the simulated coronary artery vessel 2 is wound on the first motors 16, and then left and right pulling forces are generated on the simulated coronary artery vessel 2, so that a through hole on the adjusting membrane 6 is opened; a dispensing part for controlling simulation of coronary atherosclerosis is arranged at the communication position of the elastic capsule body 5 and the outer tube 3, the dispensing part comprises a suction part and an auxiliary part, and the suction part is used for simulating that human fat enters the inner wall of a blood vessel through epithelial cells of an aged blood vessel and is accumulated on the inner wall; the auxiliary component is used for simulating the action principle of white blood cells and the occurrence process of coronary atherosclerosis after the fat of a human body is absorbed;

the simulated circulation body 7 is arranged in the inner tube 4, the simulated circulation body 7 comprises a transparent shell 8, a plurality of magnetic strips 9 and a plurality of colored lamp lines 10, the colored lamp lines 10 have different colors, at the moment, the colored lamp lines 10 emit different lights to represent that different nutrients run in an artery, for example, red platelets emit light through the red colored lamp lines, yellow fat emits light through the yellow colored lamp lines, blue water emits light through the blue colored lamp lines, white cells emit light through the white colored lamp lines, demonstration of transported substances in the artery is realized through the colored lamp lines, the colored lamp lines 10 are arranged in the transparent shell 8 side by side, and the magnetic strips 9 are uniformly arranged at the top of the transparent shell 8;

an auxiliary learning piece is filled between the inner tube 4 and the simulation circulating body 7, the auxiliary learning piece comprises a simulated platelet block 13, a simulated leukocyte ball 14 and simulated fat 15, the sizes and the colors of the three are different, so that the displacement of the three in the demonstration process can be conveniently distinguished, the simulated leukocyte ball 14 is a magnetic ball, and the simulated leukocyte ball 14 can be adsorbed on the magnetic strip 9;

heart main part 1 and coronary artery demonstration main part all set up in backup pad 11, and backup pad 11 sets up in display box 12, adopts backup pad 11 to keep coronary artery demonstration main part and heart main part 1 stable, and display box 12 is convenient for protect heart main part 1 and coronary artery demonstration main part.

Further, the suction member includes:

a suction pump 18 provided on the support plate 11;

one end of each suction pipe 17 penetrates through the outer pipe 3 and is communicated with the elastic bag body 5, and the other end of each suction pipe is communicated with the suction pump 18;

filter screens 19 provided at both ends of the air pump 18; under the action of the air pump 17, the simulated fat 15 enters the elastic bag body 5 through the through hole on the adjusting membrane 6, and the expanded elastic bag body 5 gradually reduces the space of the inner tube 4 along with the continuous filling of the simulated fat 15 to ensure that the elastic bag body 5 generates an expansion bulge, so that the human artery is gradually hindered from conveying transported objects; this process mimics the entry of fat 15 into the inner wall of the blood vessel via the epithelial cells of aging blood vessels and deposits on the inner wall.

Further, the auxiliary member includes:

the auxiliary box 20 is filled with magnetic powder, and the magnetic powder can be adsorbed on the simulated leukocyte balls 14;

a plurality of communicating pipes 21, its one end link up with auxiliary tank 20 jointly, and the other end runs through outer tube 3 respectively and link up with elasticity utricule 5, all is provided with limiting plate 22 in communicating pipe 21, and per two limiting plates 22 are connected with a locating part jointly, and the locating part includes:

a second motor 23 provided on the support plate 11;

a driving wheel 24 connected with an output shaft of the second motor 23, wherein a driven wheel 25 is meshed with the driving wheel 24;

the rotating rods 26 are sleeved and fixedly connected to the driven wheel 25, the rotating rods 26 positioned at two sides of the driven wheel 25 are respectively provided with a spiral plate 27, and the two spiral plates 27 are arranged in a mirror symmetry manner;

a moving block 28 which is sleeved on the rotating rod 26 and is in threaded connection with the spiral plate 27, and one end of the limit plate 22 is connected to the moving block 28; at this time, after the second motor 23 is turned on, the output shaft of the second motor 23 drives the driving wheel 24 to rotate, the driven wheel 25 engaged with the driving wheel 24 also rotates, along with the rotation of the driven wheel 25, the driven wheel 25 drives the rotating rod 36, the rotating rod 26 drives the two spiral plates 27 arranged on the rotating rod 25 to rotate in a mirror image manner, and then the two moving blocks 28 move close to or away from each other, when the two moving blocks 28 are close to each other, the limiting plate 22 is pulled out from the communicating pipe 21, so that magnetic powder can enter the elastic capsule body 5 through the communicating pipe 21 and be adsorbed on the simulated leukocyte balls 14, along with the simulated leukocyte balls 14 and the magnetic powder being filled into the elastic capsule body 5, the elastic capsule body 5 continues to be expanded, and the space of the inner tube 4 is completely blocked; the simulation principle is as follows: after fat is gradually accumulated, the action of leukocytes is shown, which enter the inner wall of blood vessels via epithelial cells of aging blood vessels and then absorb fat into the body, but leukocytes also swell after absorption and form large and hard atheromatous plaques under the blood vessels, which is called coronary atherosclerosis.

Further, backup pad 11 and display box 12 sliding connection, the symmetry spiro union has screw rod 29 on the display box 12, the symmetry is provided with slider 30 on two screw rods 29, slider 30 is connected with backup pad 11 jointly, the top of screw rod 29 is connected with third motor 31 respectively, after two third motors 31 move, the traffic direction of two third motors 31 is unanimous, the screw rod 29 is rotatory to drive slider 30 simultaneously and moves up or move down this moment, after two sliders 30 move up simultaneously, backup pad 11 is by the 12 roll-off in the display box, conveniently demonstrate, after the show, adjust third motor 31, and make third motor 31 rotate to opposite direction, make slider 30 drive backup pad 11 enter into display box 12 in, adopt display box 12 to preserve.

The first motor 16, the second motor 23 and the third motor 31 are positive and negative motors and are electrically connected with the controller, and the controller is also electrically connected with the colored lamp wire 10, the air pump 18 and the external power supply respectively.

The using method comprises the following steps:

when the display box is used, the controller controls the two third motors 31 to operate simultaneously, and the two third motors 31 are adopted to drive the support plate 11 to slide out of the display box 12; then, a control switch of the color lamp wire 10 is turned on, different nutrients are simulated to run in the artery, and the demonstration of transported objects in the artery is realized through the color lamp wire 10;

the simulation demonstration of coronary atherosclerosis can be carried out while the demonstration of the colorful lamp line 10 is carried out or after the demonstration of the colorful lamp line 10, the first motor 16 is controlled to operate, after the first motor 16 generates tensile force on the simulated coronary blood vessel 2, the pupil of the adjusting membrane 6 is expanded, the air suction pump 18 is adjusted and operates, the simulated fat 15 enters the elastic capsule body 5 through the through hole on the adjusting membrane 6 under the action of negative pressure, the elastic capsule body 5 is expanded and bulges along with the continuous filling of the simulated fat 15, the space of the inner tube 4 is gradually reduced by the expanded elastic capsule body 5, and at the moment, the fat in the blood vessel gradually obstructs the human artery to convey nutrients; the process simulates fat entering the inner wall of the blood vessel through epithelial cells of the aged blood vessel and accumulating on the inner wall;

in the process that the simulated fat 15 is gradually accumulated in the elastic capsule body 5, along with the increase of the negative pressure action of the air pump 18, the simulated leukocyte balls 14 adsorbed on the magnetic strip 9 are also sucked into the elastic capsule body 5, after the simulated leukocyte balls 14 are arranged in the elastic capsule body 5, the switch of the second motor 23 is controlled, so that the magnetic powder in the auxiliary tank 20 enters the elastic capsule body 5 through the communicating pipe 21 and is adsorbed on the simulated leukocyte balls 14, and the elastic capsule body 5 continues to expand along with the filling of the simulated leukocyte balls 14 and the magnetic powder into the elastic capsule body 5, and the space of the inner tube 4 is completely blocked; the simulation principle is as follows: after fat is gradually accumulated, the function of white blood cells is shown, the white blood cells enter the inner wall of a blood vessel through epithelial cells of an aged blood vessel, then the fat is absorbed into a body, but the white blood cells are also swelled after being absorbed and form large and hard atheromatous plaques under the blood vessel, the phenomenon is called coronary atherosclerosis, in the demonstration, the atheromatous plaques are embodied through magnetic powder, and the occurrence process of the coronary atherosclerosis can be clearly observed in the demonstration.

After the demonstration, open the sealed lid on the elasticity utricule 5, and will simulate leucocyte ball 14, simulation fat 15 and magnetic take out, then adopt sealed lid to seal the opening again, continue to add the magnetic in auxiliary box 20, add simulation leucocyte ball 14 and simulation fat 15 to simulation coronary artery blood vessel 2 in, and make the two be located between inner tube 4 and the transparent shell 8, two third motors 31 of the secondary control move simultaneously, and drive backup pad 11 and put into to show case 12 in, convenient next use.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (8)

1. A display device for a coronary atherosclerosis model is characterized by comprising a heart body (1) and a coronary artery demonstration body, wherein the coronary artery demonstration body is arranged on the heart body (1);

the coronary artery demonstration body comprises:

the simulated coronary artery blood vessel (2) is arranged in a coronary sulcus of the heart main body (1), two ends of the simulated coronary artery blood vessel are respectively connected with a stretching piece, and the simulated coronary artery blood vessel (2) comprises an outer tube (3) and an inner tube (4) sleeved in the outer tube (3);

the elastic bag bodies (5) are arranged between the inner pipe (4) and the outer pipe (3) in a penetrating manner, adjusting films (6) are arranged at the positions where the elastic bag bodies (5) are communicated with the inner pipe (4), and a plurality of through holes are formed in the adjusting films (6); a dispensing part for controlling simulation of coronary atherosclerosis is arranged at the communication position of the elastic balloon (5) and the outer tube (3), and comprises a suction part and an auxiliary part;

the simulation circulating body (7) is arranged in the inner tube (4), the simulation circulating body (7) comprises a transparent outer shell (8), a plurality of magnetic stripes (9) and a plurality of colored lamp wires (10), the colored lamp wires (10) are arranged in the transparent outer shell (8) side by side, and the magnetic stripes (9) are uniformly arranged at the top of the transparent outer shell (8);

an auxiliary learning piece is filled between the inner tube (4) and the simulation circulating body (7);

the heart main part (1) with coronary artery demonstration main part all sets up on backup pad (11), backup pad (11) set up in show case (12).

2. A display device for coronary atherosclerosis according to claim 1, characterized in that the auxiliary learning member comprises a simulated platelet block (13), a simulated leukocyte ball (14) and a simulated fat (15), all of which are different in size and color, and the simulated leukocyte ball (14) is a magnetic ball.

3. A display device for coronary atherosclerosis according to claim 2, characterized in that the regulating membrane (6) is a concertina-type regulating membrane (6), and the through holes on the regulating membrane (6) only allow the simulated leukocyte balls (14) and the simulated fat (15) to pass through.

4. A display device for a coronary artery atherosclerosis model according to claim 1, characterized in that the stretching member comprises two first motors (16), the first motors (16) are arranged on the supporting plate (11), and the output shafts of the two first motors (16) are respectively connected with two ends of the simulated coronary artery vessel (2).

5. A display device for a model of coronary atherosclerosis according to claim 1, characterized in that said suction member comprises:

a suction pump (18) provided on the support plate (11);

one end of each suction pipe (17) penetrates through the outer pipe (3) and is communicated with the elastic bag body (5), and the other end of each suction pipe is communicated with the suction pump (18);

and a filter screen (19) which is arranged at two ends of the air suction pump (18).

6. A display device for a model of coronary atherosclerosis according to claim 1, wherein said auxiliary member comprises:

the auxiliary box (20), the said auxiliary box (20) is packed with the magnetic powder, the said magnetic powder can be adsorbed on the said simulated leukocyte ball (14);

a plurality of communicating pipes (21), its one end jointly with auxiliary tank (20) through connection, the other end run through respectively outer tube (3) and with elasticity utricule (5) through connection, all be provided with limiting plate (22) in communicating pipe (21), per two limiting plate (22) are connected with a locating part jointly.

7. A display device as claimed in claim 6, wherein said retaining member comprises:

a second motor (23) provided on the support plate (11);

a driving wheel (24) connected with an output shaft of the second motor (23), wherein a driven wheel (25) is meshed with the driving wheel (24);

the rotating rod (26) is sleeved and fixedly connected to the driven wheel (25), spiral plates (27) are respectively arranged on the rotating rod (26) positioned on two sides of the driven wheel (25), and the two spiral plates (27) are arranged in a mirror symmetry manner;

and the moving block (28) is sleeved on the rotating rod (26) and is in threaded connection with the spiral plate (27), and one end of the limiting plate (22) is connected to the moving block (28).

8. The display device for the coronary atherosclerosis model according to claim 1, characterized in that the support plate (11) is connected with the display box (12) in a sliding manner, the display box (12) is symmetrically screwed with screw rods (29), two slide blocks (30) are symmetrically arranged on the two screw rods (29), the slide blocks (30) are connected with the support plate (11) together, and the top ends of the screw rods (29) are respectively connected with a third motor (31).

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