Visual lower limb venous thrombosis whole course simulation teaching aid

Abstract

The invention discloses a visual lower limb venous thrombosis whole course simulation teaching aid, belongs to the technical field of medical education teaching aids, and can enable a learner to visually understand a blood backflow mechanism of a lower limb venous system and a formation process of related diseases. Comprising a first hose, a first valve type one-way valve, a second hose, a second valve type one-way valve, a third hose and a plurality of flow blocks, and the first valve type one-way valve is installed between one end of the first hose and one end of the second hose; the second valve type one-way valve is mounted between the other end of the second hose and one end of the third hose; the second valve type one-way valve and the first valve type one-way valve have the same flow direction, and fluid in the second hose can flow into the third hose through the second valve type one-way valve; at least one flow block is arranged in each of the first hose, the second hose and the third hose; wherein the first hose, the second hose and the third hose are all transparent parts.

Description

Technical Field

[0001] The present invention relates to the technical field of medical education teaching aids, and specifically to a visual simulation teaching aid for the whole course of lower limb venous thrombosis. Background Art

[0002] How the blood in the lower limbs of the human body returns to the heart against gravity involves complex physiological structures and functions. In addition to the pumping action of the heart, the lower limb venous system also plays a crucial role in promoting blood return.

[0003] The lower limb venous system has a unique anatomical structure, and the one-way valves provided inside it are the key to ensuring the one-way return of blood. These valves are like precise valves that can close and open in a timely manner according to the flow state of the blood. When the blood flows towards the heart, the valves open to allow the blood to pass through smoothly; while when the blood attempts to flow backwards, the valves quickly close to effectively prevent the backflow of blood. This mechanism ensures that venous blood can continuously and unidirectionally flow back to the heart and is an important basis for maintaining the normal return of lower limb venous blood.

[0004] In addition to the role of venous valves, the muscle contraction of the lower limb skeletal muscles also plays a crucial role. When the skeletal muscles contract, they compress the veins, accelerating the blood flow in the veins, pushing the blood towards the heart, and causing the venous valves to open, further promoting the blood flow towards the heart. When the skeletal muscles relax, the veins rebound and the valves close to prevent the backflow of blood. This process of skeletal muscle contraction and relaxation forms a "pump" effect, continuously pushing the blood towards the heart. Therefore, the lower limb veins are vividly called the "second heart".

[0005] When the lower limb skeletal muscles lack contraction due to long-term bed rest, surgery, or other factors, the blood continuously accumulates and is difficult to flow in the veins. Some coagulation factors will aggregate together, thus forming thrombi. These thrombi are not stable. When the skeletal muscles contract again, some thrombi will fall off and flow back to the heart with the blood flow, greatly increasing the risk of serious complications such as pulmonary embolism. Therefore, it is very necessary to incorporate this into medical education.

[0006] However, in traditional medical education, two-dimensional anatomical atlases or static venous models are often used for knowledge dissemination. Although these teaching aids can show the basic morphology of venous valves, they cannot dynamically present the core mechanism of the synergistic effect of the "skeletal muscle pump - venous valve". This makes it difficult for students and patients to deeply understand the dynamic process of blood circulation and the complex mechanism of thrombus formation.

[0007] The disclosure of the above background art content is only for assisting in understanding the concept and technical solution of the present invention, and it does not necessarily belong to the prior art of this patent application. Without clear evidence indicating that the above content was publicly available on the filing date of this patent application, the above background art should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0008] The present application provides a visual teaching aid for simulating the whole course of lower limb venous thrombosis, enabling learners to intuitively understand the blood return mechanism of the lower limb venous system and the formation process of related diseases.

[0009] To achieve the above object, the embodiments of the present application disclose the following technical solutions:

[0010] A visual teaching aid for simulating the whole course of lower limb venous thrombosis, comprising: a first hose, a first valve-type one-way valve, a second hose, a second valve-type one-way valve, a third hose, and a plurality of flow blocks. The first valve-type one-way valve is installed between one end of the first hose and one end of the second hose; the second valve-type one-way valve is installed between the other end of the second hose and one end of the third hose; the flow direction of the second valve-type one-way valve is the same as that of the first valve-type one-way valve, and the fluid in the second hose can flow into the third hose through the second valve-type one-way valve; at least one flow block is provided in each of the first hose, the second hose, and the third hose; wherein, the first hose, the second hose, and the third hose are all transparent members.

[0011] In some possible embodiments, the flow block is a waterproof LED lamp.

[0012] In some possible embodiments, the visual teaching aid for simulating the whole course of lower limb venous thrombosis further includes a first hose joint and a second hose joint. The first hose joint is installed on the other end of the first hose; the second hose joint is installed on the other end of the third hose.

[0013] In some possible embodiments, the first hose, the second hose, and the third hose are all silicone hoses.

[0014] In some possible embodiments, the first hose joint and the second hose joint are both PP plastic hose joints.

[0015] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0016] 1. Through the series connection structure of the first hose, the second hose, and the third hose, in coordination with the synergistic effects of the first valve-type one-way valve, the second valve-type one-way valve, and the flow block, a dynamic blood flow simulation system is constructed. When the operator presses the second hose (simulating skeletal muscle contraction), the fluid pressure inside the hose pushes the liquid and the flow block towards the third hose. At this time, the second valve-type one-way valve is opened by the impact of the fluid, while the first valve-type one-way valve remains closed due to backpressure, accurately reproducing the "open at the bottom and closed at the top" state of the venous valve when the muscle pump pushes blood towards the heart.

[0017] At the moment of releasing the pressure on the second hose (simulating muscle relaxation), the self-retraction of the elastic hose wall generates negative pressure suction. At this time, the first valve-type one-way valve is opened by the negative pressure traction, allowing the fluid in the first hose to replenish and flow back, while the second valve-type one-way valve immediately closes under the action of gravity and reverse pressure difference to prevent the flow block from flowing backward. This periodic "squeeze - rebound" operation makes the flow block form a pulsating motion among the three hoses, directly corresponding to the rhythmic changes of the lower limb venous blood flow during human walking.

[0018] When the flow block stays at one end of the second hose near the second valve-type one-way valve (simulating the venous valve sinus) for more than the set time, self-aggregation effects are generated between the blocks through intermolecular forces, forming visible cluster structures in the transparent lumen, realistically simulating the thrombus formation process caused by blood stasis. In this way, learners can intuitively understand the blood return mechanism of the lower limb venous system and the formation process of related diseases.

[0019] 2. Since the flow block is a waterproof LED light, the simulation is made more attractive and intuitive, and can better attract the attention of learners. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, for clarity and convenience of understanding, the dimensions of some features may be deformed.

[0021] Figure 1 It is a schematic structural diagram of a visual lower limb venous thrombosis whole-course simulation teaching aid provided by some embodiments of the present application.

[0022] Description of the Reference Numerals:

[0023] 1. First hose; 2. First valve-type one-way valve; 3. Second hose; 4. Second valve-type one-way valve; 5. Third hose; 6. Flow block; 7. First hose joint; 8. Second hose joint. Detailed Embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] It should be noted that in the description of the present invention, the terms "in", "upper", "lower", "horizontal", "inner", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0026] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] Please refer to Figure 1 , the embodiment of the present application provides a visual teaching aid for the whole course simulation of lower limb venous thrombosis, including: a first hose 1, a first valve type one-way valve 2, a second hose 3, a second valve type one-way valve 4, a third hose 5 and a plurality of flow blocks 6. The first valve type one-way valve 2 is installed between one end of the first hose 1 and one end of the second hose 3; the second valve type one-way valve 4 is installed between the other end of the second hose 3 and one end of the third hose 5; the flow direction of the second valve type one-way valve 4 is the same as that of the first valve type one-way valve 2, and the fluid in the second hose 3 can flow into the third hose 5 through the second valve type one-way valve 4; at least one flow block 6 is arranged in each of the first hose 1, the second hose 3 and the third hose 5; wherein, the first hose 1, the second hose 3 and the third hose 5 are all transparent parts. Exemplarily, the first hose 1, the second hose 3 and the third hose 5 can be, but are not limited to, silicone hoses.

[0028] In this way, through the series connection structure of the first hose 1, the second hose 3, and the third hose 5, combined with the synergistic effect of the first valve-type one-way valve 2, the second valve-type one-way valve 4, and the flow block 6, a dynamic blood flow simulation system can be constructed. When the operator presses the second hose 3 (simulating skeletal muscle contraction), the fluid pressure inside the tube pushes the liquid and the flow block 6 towards the third hose 5. At this time, the second valve-type one-way valve 4 is opened by the impact of the fluid, while the first valve-type one-way valve 2 remains closed due to the back pressure, accurately reproducing the "open at the bottom and closed at the top" state of the venous valve when the muscle pump pushes blood towards the heart.

[0029] At the moment of releasing the pressure on the second hose 3 (simulating muscle relaxation), the self-retraction of the elastic hose wall generates a negative pressure suction. At this time, the first valve-type one-way valve 2 is opened by the negative pressure traction, allowing the fluid in the first hose 1 to replenish and flow back (the closure of the first valve-type one-way valve prevents the blood from flowing backward), while the second valve-type one-way valve 4 immediately closes under the action of gravity and the reverse pressure difference to prevent the flow block 6 from flowing backward. This periodic "squeezing - rebounding" operation makes the flow block 6 form a pulsating motion among the three hoses, directly corresponding to the rhythmic changes of the lower limb venous blood flow during human walking.

[0030] When the flow block 6 stays in a specific retention area (simulating the venous valve sinus) near the second valve-type one-way valve 4 at one end of the second hose 2 for more than the set time, a self-aggregation effect is generated between the blocks through intermolecular forces, forming a visible cluster structure in the transparent lumen, realistically simulating the thrombus formation process caused by blood stasis.

[0031] In some embodiments, the flow block 6 is a waterproof LED lamp. In this way, the simulation can be made more attractive and intuitive, and can better attract the attention of learners.

[0032] In some embodiments, the visualization teaching aid for the whole process of lower limb venous thrombosis also includes a first hose connector 7 and a second hose connector 8. The first hose connector 7 is installed at the other end of the first hose 1; the second hose connector 8 is installed at the other end of the third hose 5. Exemplarily, the first hose connector 7 and the second hose connector 8 can be, but are not limited to, PP plastic hose connectors.

[0033] The above describes the present invention and its implementation manners. This description is not restrictive, and what is shown throughout the text is only one of the implementation manners of the present invention. The actual structure is not limited to this. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the present invention creation, design similar structural manners and embodiments to this technical solution without creative efforts, they should all fall within the protection scope of the present invention.

Claims

1. A visual simulation teaching aid for the whole course of lower limb venous thrombosis, characterized in that Comprising: A first hose; A first diaphragm check valve; A second hose, the first diaphragm check valve being installed between one end of the first hose and one end of the second hose; A second diaphragm check valve; A third hose, the second diaphragm check valve being installed between the other end of the second hose and one end of the third hose; the flow direction of the second diaphragm check valve is the same as that of the first diaphragm check valve, and the fluid in the second hose can flow into the third hose through the second diaphragm check valve; A plurality of flow blocks, at least one of the flow blocks being provided in each of the first hose, the second hose, and the third hose; wherein, the first hose, the second hose, and the third hose are all transparent members.

2. The visualized full-course simulation teaching aid for lower limb venous thrombosis according to claim 1, characterized in that, The flow block is a waterproof LED lamp.

3. The visualized full-course simulation teaching aid for lower limb venous thrombosis according to claim 2, wherein It further includes a first hose joint and a second hose joint, the first hose joint being installed on the other end of the first hose; the second hose joint being installed on the other end of the third hose.

4. The visualized full-course simulation teaching aid for lower limb venous thrombosis according to any one of claims 1-3, characterized in that The first hose, the second hose, and the third hose are all silicone hoses.

5. The visualized full-course simulation teaching aid for lower limb venous thrombosis according to claim 3, characterized in that The first hose joint and the second hose joint are both PP plastic hose joints.

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