CN214175480U

CN214175480U - A Teaching Model for External Counterpulsation Demonstration

Info

Publication number: CN214175480U
Application number: CN202022846338.2U
Authority: CN
Inventors: 方圆
Original assignee: University of Chinese Academy of Sciences
Current assignee: University of Chinese Academy of Sciences
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-09-10
Anticipated expiration: 2030-12-01

Abstract

The utility model discloses a teaching model for external counterpulsation demonstration. A vein model tube, a coronary model tube, a balloon coated on the artery model tube, a squeeze ball for squeezing the balloon, and a one-way valve for controlling the unidirectional flow of fluid, the heart model body, the artery The model tube, the vein model tube and the coronary model tube are connected to each other through a one-way valve, all of which are made of transparent materials, and the fluid is provided inside them; One-way flow, fully express the process of blood flow and cardiac diastole when the external counterpulsation device squeezes the lower extremity arteries, so as to clearly express the complete process of external counterpulsation, which is convenient for relevant personnel to learn and understand, and it is also convenient for patients who are suitable for external counterpulsation. mission.

Description

Teaching model for external counterpulsation demonstration

Technical Field

The utility model belongs to the technical field of medical model, especially, relate to a teaching model for external counterpulsation demonstration.

Background

The external counterpulsation is a method for squeezing lower limbs and waist and hip by external non-invasive sequential irrigation, can relieve and eliminate angina pectoris symptoms, improve anoxia-ischemia state of important organs of organism, and is a medical equipment for preventing and treating cardiovascular and cerebrovascular diseases. The air bags are wrapped on the four limbs and the hip, and the air bags are inflated and pressurized in the diastole of the heart to promote the blood of the artery of the limb to return to the aorta, so that the diastolic pressure is obviously increased, the blood flow is increased for the heart, and the afterload of the heart is reduced; the air bag can exhaust air rapidly in the systole, the pressure is relieved, the systolic pressure in the aorta is reduced, the resistance in the cardiac ejection period is relieved to the maximum extent, and the blood flows to the far end in an accelerated way, thereby achieving the counterpulsation effect.

In order to facilitate understanding and learning of the external counterpulsation principle by related personnel such as medical workers, a solid model is often manufactured, but the traditional model demonstrates the expansion and contraction of the heart and diaphragm during external counterpulsation through the squeezing and relaxation of the balloon model by the air bag, although the basic working process can be clearly expressed, the basic working process cannot be reflected in the blood flowing condition in the body during external counterpulsation, the complete process of the external counterpulsation cannot be clearly expressed, and the understanding of the related personnel is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a teaching model for external counterpulsation demonstration, which is convenient for relevant personnel to understand and learn.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a teaching model for external counterpulsation demonstration comprises a demonstration device for representing a human body structure and fluid arranged in the demonstration device, wherein the demonstration device comprises a heart model body, an artery model tube, a vein model tube, a coronary artery model tube, an air bag coated on the artery model tube, an extrusion ball for extruding the air bag and a one-way valve for controlling the one-way flow of the fluid, the heart model body, the artery model tube, the vein model tube and the coronary artery model tube are communicated with one another through the one-way valve, the four are all made of transparent materials, and the fluid is arranged in the four tubes; the two sides of the one-way valve are provided with arc petals.

Through the arrangement of the demonstration device and the fluid, the process of blood flow and diastole when the external counterpulsation device extrudes the artery of the lower limb can be completely expressed through the unidirectional flow of the fluid in the demonstration device, so that the complete process of cardiac pacing is clearly expressed, and the study and the understanding of related personnel are facilitated.

Preferably, the fluid is a coloured liquid. Through the arrangement of the colored liquid, the flow path of the blood can be further clearly shown, and the observation and study of related personnel are facilitated.

Preferably, the fluid is a turbid liquid, and easily precipitated sediments are arranged in the turbid liquid. Through the setting of turbid liquid, the condition that the blood flow speed is high and plaques are not easy to grow during actual external counterpulsation can be further expressed through the amount of precipitates during different fluid flow rates, so that related personnel can further know the blood flow condition during external counterpulsation and the generation problem of related abnormal conditions, and the study and the understanding of the related personnel are facilitated.

Preferably, the check valve comprises a shell, a pressing block arranged in the shell and an elastic piece used for limiting the movement of the pressing block; the pressing block is abutted against the inner wall of the shell. Through the setting of the one-way valve, the one-way flow of the blood in the artery and the vein can be correspondingly expressed, thereby being convenient for the study and understanding of the related personnel.

Preferably, a support frame is arranged on one opening of the shell, a guide cylinder for moving the pressing block is arranged on the support frame, and the elastic part is arranged in the guide cylinder and is a spirally wound thin plate; one end of the elastic piece is fixedly connected to the guide cylinder, and the other end of the elastic piece is fixedly connected to the pressing block; the pressing block penetrates through the guide cylinder, a clamping groove is formed in the end face of the pressing block, which is located in the guide cylinder, a spiral rod is arranged in the guide cylinder, and the spiral rod is correspondingly matched with the clamping groove. Through the cooperation setting of guide cylinder, hob, elastic component and briquetting, can make the elastic component not with fluid direct contact when realizing the one-way open and close control of check valve, avoid making the sediment in the fluid to receive the elastic component to hinder and remain in a large number to finally reduce the sediment and remain in the check valve, guarantee the normal operating of this model, prolong the life of this model.

Preferably, the mouth part of the guide cylinder is provided with a blocking assembly for limiting foreign matters from entering the guide cylinder, and the blocking assembly comprises a blocking brush arranged at the bottom of the guide cylinder and a rubber ring arranged at the bottom of the guide cylinder. Through the setting that blocks the subassembly, can restrict the deposit and get into in the guide cylinder to further guarantee the normal operating of model.

Preferably, a blocking spring is embedded in the blocking brush. The elasticity of the blocking brush is increased through the arrangement of the blocking spring, so that the pre-tightening force of the blocking brush for pressing the pressing block is improved, and the blocking brush can scrape off sediments on the pressing block more easily; meanwhile, the service life of the blocking brush is prolonged, and deformation and failure after the blocking brush is bent for multiple times are avoided; the residue of the sediment in the one-way valve is reduced, the normal operation of the model is ensured, and the service life of the model is prolonged.

Preferably, the outer wall of the pressing block is provided with a stirring rod, and the stirring rod is provided with a stirring frame. Through the motion of puddler, stir the fluid in the check valve, reduce the residue of sediment in the check valve, further guarantee the normal operating of this model, prolong the life of this model.

To sum up, the utility model has the advantages of it is following: through the arrangement of the demonstration device and the fluid, the process of blood flow and diastole when the external counterpulsation device extrudes the artery of the lower limb can be completely expressed through the unidirectional flow of the fluid in the demonstration device, so that the complete process of cardiac pacing is clearly expressed, and the study and the understanding of related personnel are facilitated; through the arrangement of the colored liquid, the observation and study of related personnel are facilitated; through the setting of turbid liquid, the condition that the blood flow speed is high and plaques are not easy to grow during actual external counterpulsation can be further expressed, so that related personnel can further know the blood flow condition during external counterpulsation and the generation problem of related abnormal conditions, and the study and the understanding of the related personnel are facilitated; through the arrangement of the one-way valve, the one-way flow of blood in artery and vein can be correspondingly expressed, thereby facilitating the study and understanding of the related personnel; through the cooperation setting of guide cylinder, hob, elastic component, suppression piece, block subassembly and stirring frame, reduce the precipitate and remain in the check valve, guarantee the normal operating of this model, prolong the life of this model.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a cross-sectional view of the check valve.

Fig. 4 is a partially enlarged view of a portion a in fig. 3.

Fig. 5 is a partial enlarged view at B in fig. 3.

Detailed Description

As shown in fig. 1-5, a teaching model for external counterpulsation demonstration comprises a demonstration device and a fluid, wherein the demonstration device comprises a heart model body 1, an artery model tube 11, a vein model tube 12, a coronary artery model tube 13, an air bag 14, an extrusion ball 15 and a one-way valve 16, wherein the artery model tube 11 and the vein model tube 12 are provided with two groups which are respectively arranged on the upper end and the lower end of the heart model body 1, the group of the artery model tube 11 and the vein model tube 12 represent arteriovenous of the lower limb of a human body, and the group of the artery model tube 11 and the vein model tube 12 represent arteriovenous of the upper limb of the human body or other visceral organs; the coronary artery model tube 13 is used for representing the coronary artery at the heart; the heart model body 1 is used to represent the heart.

Further, the heart model body 1, the artery model tube 11, the vein model tube 12 and the coronary artery model tube 13 are communicated with each other through a one-way valve 16, the four are all made of transparent plastic materials, and the fluid is filled in the four; one end of the artery model tube 11 is communicated with the heart model body 1, and the other end is communicated with the vein model tube 12; one end of the venous model tube 12, which is far away from the arterial model tube 11, is communicated with the heart model body 1; the air bag 14 is covered on the outer wall of one of the artery model tubes 11, the extrusion ball 15 is communicated with the air bag 14, and the interior of the extrusion ball is filled with gas which can be air.

Further, the two sides of the one-way valve 16 are provided with arc-shaped flaps 17 for showing the one-way valve of the human blood vessel.

Further, the fluid is a colored liquid, which may be water mixed with paint; the fluid also contains sediment, which can be sand.

Further, the check valve 16 includes a housing 21, a pressing block 22 and an elastic member 23; the shell 21 is fixedly arranged at the joint of the heart model body 1, the artery model tube 11, the vein model tube 12 and the coronary artery model tube 13; two ends of the funnel are respectively provided with an opening, wherein one opening is funnel-shaped; and the other opening is cylindrical, a support frame 24 is fixedly connected to the opening part of the opening, a guide cylinder 25 is fixedly connected to the top of the support frame 24 integrally, and the pressing block 22 is arranged in the guide cylinder 25 in a penetrating manner.

Further, the elastic member 23 is a rigid thin plate spirally wound in an archimedes spiral; one end of the elastic element 23 is fixedly connected to the inner end face of the root of the guide cylinder 25, and the other end is fixedly connected to the pressing block 22; the pressing block 22 is arranged in the guide cylinder 25 in a penetrating manner, the end surface of the pressing block located outside the guide cylinder 25 is arc-shaped and abuts against the inner wall of the funnel opening of the shell 21, a clamping groove 31 is formed in the end surface of the pressing block located in the guide cylinder 25, and the clamping groove 31 is cross-shaped; a screw rod 32 penetrates through the guide cylinder 25, four spiral protrusions are arranged on the screw rod 32 along the circumferential direction, the screw rod 32 is correspondingly matched in the clamping groove 31, and the clamping groove 31 can rotate relatively along the guide direction of the screw rod 32 so as to finally drive the pressing block to rotate relatively.

Further, a blocking component is arranged at the opening of the guide cylinder 25, the blocking component blocks the brush 41 and the rubber ring 42, the blocking brush 41 is arranged on the inner wall of the guide cylinder 25, and the blocking spring 43 is embedded inside the blocking brush 41; the rubber ring 42 is integrally bonded to the inner wall of the guide cylinder 25 and is located on the side of the blocking brush 41 close to the guide cylinder 25.

Further, a stirring rod 44 is fixedly connected to the outer wall of the pressing block 22, and the stirring rod 44 may be a rubber telescopic sleeve rod; the stirring rods 44 are arranged along the circumferential direction of the pressing block 22, a stirring frame 45 is integrally and fixedly connected to the stirring rods, the stirring frame 45 is in a shape like a Chinese character 'mu', is made of elastic materials and can be a rubber block, and one end of the stirring frame 45 is abutted against the inner wall of the shell 21.

The specific implementation process of the application is as follows: by squeezing the squeezing bulb 15, the air bag 14 is expanded to squeeze the artery model tube 11 representing the lower limb, and the check valve 16 is opened by pressure, so that the fluid flows into the heart model body 1 from the artery model tube 11, and meanwhile, the fluid also enters the coronary artery model tube 13 to form a backflow; then, the squeezing ball 15 is loosened, the pressure in the venous model tube 12 and the arterial model tube 11 is reduced, so that the fluid flows into the venous model tube 12 from the heart model body 1, and finally the fluid flows into the arterial model tube 11 from the venous model tube 12 to form backflow; in the process, the sediment and the penetrated black substances are different along with the difference of the flow rate of the fluid; by the process, the bandage of the external counterpulsation device can be simulated to be bound on the lower limbs of a human body, the bandage is inflated and pressurized in the diastole, the blood of the limb artery is driven to return to the aorta, the diastolic pressure is obviously increased, the blood flow is increased for the heart, and the afterload of the heart is reduced; the air bag 14 exhausts air rapidly in the systole, the pressure is relieved, the systolic pressure in the aorta is reduced, the resistance in the cardiac ejection period is relieved to the maximum extent, and the blood flows to the far end in an accelerating way, thereby achieving the counterpulsation effect; meanwhile, the amount of the precipitate which is penetrated out at different fluid flow rates expresses the influence of the blood flow speed on the symptoms of the macula during the actual external counterpulsation.

It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims

1. A teaching model for external counterpulsation demonstration comprises a demonstration device for representing a human body structure and fluid arranged in the demonstration device, and is characterized in that the demonstration device comprises a heart model body (1), an artery model tube (11), a vein model tube (12), a coronary artery model tube (13), an air bag (14) coated on the artery model tube (11), an extrusion ball (15) for extruding the air bag (14) and a one-way valve (16) for controlling the one-way flow of the fluid, wherein the heart model body (1), the artery model tube (11), the vein model tube (12) and the coronary artery model tube (13) are communicated with each other through the one-way valve (16), the four are all made of transparent materials, and the fluid is arranged in the four parts; arc petals are arranged on two sides of the one-way valve (16).

2. The teaching model of claim 1 for demonstration of external counterpulsation, wherein: the fluid is a colored liquid.

3. The teaching model of claim 1 for demonstration of external counterpulsation, wherein: the fluid is turbid liquid, and precipitates which are easy to precipitate are arranged in the turbid liquid.

4. The teaching model of claim 1 for demonstration of external counterpulsation, wherein: the check valve (16) comprises a shell (21), a pressing block (22) arranged in the shell (21) and an elastic piece (23) used for limiting the movement of the pressing block (22); the pressing block (22) is abutted against the inner wall of the shell (21).

5. The instructional model for demonstration of external counterpulsation according to claim 4, wherein: a support frame (24) is arranged on one opening of the shell (21), a guide cylinder (25) for moving the pressing block (22) is arranged on the support frame (24), and the elastic piece (23) is arranged in the guide cylinder (25) and is a thin plate wound into a spiral shape; one end of the elastic piece (23) is fixedly connected to the guide cylinder (25), and the other end of the elastic piece is fixedly connected to the pressing block (22); the pressing block (22) penetrates through the guide cylinder (25), a clamping groove (31) is formed in the end face of the pressing block, located in the guide cylinder (25), a spiral rod (32) is arranged in the guide cylinder (25), and the spiral rod (32) is correspondingly matched with the clamping groove (31).

6. The instructional model for demonstration of external counterpulsation according to claim 5, wherein: the mouth part of guide cylinder (25) is equipped with and is used for restricting the foreign matter and gets into the subassembly that blocks in guide cylinder (25), block the subassembly including locating the brush (41) that blocks of guide cylinder (25) bottom and locating rubber circle (42) of guide cylinder (25) bottom.

7. The instructional model for demonstration of external counterpulsation according to claim 6, wherein: a blocking spring (43) is embedded in the blocking brush (41).

8. The instructional model for demonstration of external counterpulsation according to claim 5, wherein: and a stirring rod (44) is arranged on the outer wall of the pressing block (22), and a stirring frame (45) is arranged on the stirring rod (44).