A demonstration device based on a 3D-printed peripheral blood vessel model

Abstract

This invention discloses a demonstration device based on a 3D-printed peripheral vascular model, belonging to the field of teaching aids technology. Existing display cases cannot adjust the light source according to the ambient light, making some blood vessels difficult to observe due to lighting angle issues, affecting students' understanding and teaching quality. Furthermore, some demonstration devices are inconvenient to rotate the angle of the vascular model, are complex to operate, and are not suitable for widespread use. This invention provides a demonstration device based on a 3D-printed peripheral vascular model, including a fixed base, a central shaft disposed within the fixed base, with the vascular model mounted on top, and an adjustable light source positioned below the vascular model; a light source adjustment mechanism disposed outside the central shaft, capable of adjusting the angle of the light source. This illuminates the entire vascular model, facilitating observation by trainees from various angles.

Description

Technical Field

[0001] This invention relates to the field of teaching aids technology, specifically to a demonstration device based on a 3D-printed peripheral blood vessel model. Background Technology

[0002] 3D printing technology, as an additive manufacturing technique, has been widely applied in various fields. In the medical field, 3D printing technology has attracted widespread attention due to its ability to precisely manufacture complex structures. With the continuous advancement of 3D printing technology, its application in biomedical engineering is becoming increasingly widespread, especially in the fabrication of vascular models.

[0003] Vascular malformations are common clinical conditions, with an incidence rate of approximately 40%-60% in the head and neck region. They not only cause facial deformities, affecting appearance, but can also impair physiological functions such as swallowing and breathing. In severe cases, they can be life-threatening due to infection, ulceration, or airway compression. The treatment of complex vascular malformations has always been a challenging clinical problem. Current treatment methods include surgical resection, sclerotherapy, laser therapy, and interventional therapy, with sclerotherapy being widely used clinically. While most superficial vascular malformations can be diagnosed based on medical history and clinical presentation, imaging examinations play an irreplaceable role in diagnosing deep tissue lesions, comprehensively assessing the condition, developing treatment plans, and evaluating prognosis.

[0004] For peripheral vascular model devices based on 3D printing, accurate 3D models of peripheral blood vessels can be created based on the patient's medical imaging data (such as CT or MRI scans). 3D printing technology can manufacture vascular models with complex structures, including features such as branching, tortuosity, and stenosis. This capability allows the model to more realistically simulate the physiological characteristics of the human vascular system. By using biocompatible materials (such as gelatin, fibrinogen, etc.) and living cells (such as endothelial cells, smooth muscle cells, etc.), bioactive vascular models can be manufactured.

[0005] However, existing display cases cannot adjust the light source according to the ambient light, making some blood vessels difficult to observe due to lighting angle issues, thus affecting students' understanding and teaching quality. Furthermore, some demonstration devices are difficult to rotate the angle of the blood vessel model, are complex to operate, and are not suitable for widespread use. Summary of the Invention

[0006] To address the aforementioned problems, this invention aims to provide a demonstration device based on a 3D-printed peripheral vascular model. This device allows for adjustment of the light source angle as needed, enabling students to see complete vascular details. It also allows for easy rotation of the vascular model, facilitating observation from all directions.

[0007] The main idea of ​​the technical solution adopted in this invention is as follows: Two symmetrically arranged rotating gears can drive the meshing central shaft to rotate, thereby causing the blood vessel model to rotate; a connecting tube is sleeved on the central shaft, and a limiting disk one and a limiting disk two are integrally connected to the connecting tube. A lifting ring is provided on the limiting disk one, and two sets of control components are provided on both sides of the lifting ring, which can drive the lifting ring to slide up and down. A light source control rod is rotatably connected to the lifting ring. The angle of the light source control rod is adjusted by the up and down movement of the lifting ring, thereby adjusting the position of the light source, making the blood vessel model easier to observe.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] A demonstration device based on a 3D-printed peripheral vascular model includes a fixture and further includes:

[0010] A central axis is set inside a fixed base, and a blood vessel model is set on top of the blood vessel model. An adjustable light source is set below the blood vessel model.

[0011] The light source adjustment mechanism, located on the outside of the central axis, can adjust the position of the light source.

[0012] Furthermore, the above technical solution includes: a connecting pipe sleeved on the central shaft, a first limiting disc and a second limiting disc fixedly mounted on the connecting pipe, and a lifting ring between the first limiting disc and the second limiting disc.

[0013] Furthermore, based on the above technical solution, the lifting ring is provided with several sets of light source control rods, and the limiting disk II is rotatably connected to the lifting ring through the light source control rods.

[0014] Furthermore, based on the above technical solution, the light source control rod includes a straight rod and a V-shaped rod that are rotatably connected. The straight rod is rotatably connected to the lifting ring, and the V-shaped rod is rotatably connected to the rotating groove opened on the limiting plate II. A light source is provided on the V-shaped rod.

[0015] Furthermore, through the above technical solution, the light source adjustment mechanism includes a push shaft disposed on both sides of the lifting ring, a second roller group and a second gear are disposed on the push shaft, the second roller group and the second gear mesh with a first roller group and a first gear, and the first roller group and the first gear are disposed on a rotating shaft.

[0016] Further, based on the above technical solution, limit plates are respectively provided on both sides of the push shaft and the rotation shaft. The limit plates are provided with sliding grooves and rotation grooves. The push shaft slides up and down in the sliding groove, and the rotation shaft is set in the rotation groove.

[0017] Furthermore, the above technical solution includes a rotating rod inside the fixed base, and a conveyor belt between the rotating rod and the rotating shaft.

[0018] Furthermore, the above technical solution includes a central gear on the central shaft, which meshes with a rotating gear. When the rotating gear rotates, it can drive the blood vessel model at the top of the central shaft to rotate.

[0019] A method for using a demonstration device based on a 3D-printed peripheral vascular model, comprising the following steps:

[0020] S1. When it is necessary to rotate the blood vessel model, rotate the rotating gear, and then through the meshing between the rotating gear and the central gear, drive the central gear to rotate, which in turn drives the central shaft to rotate, and finally drives the blood vessel model to rotate.

[0021] S2. When it is necessary to adjust the light source angle, rotate the rotating rod, which in turn drives the conveyor belt on the rotating rod to rotate, which in turn drives the rotating shaft to rotate. The rotating shaft is eccentrically equipped with a first roller group and a first gear. When the two rotate, they drive the meshing second roller group and the second gear to rotate, which in turn drives the push shaft to move up and down in the sliding groove. Since the push shaft is fixedly connected to the lifting ring, it can drive the lifting ring to move up and down. When the lifting ring rises, the angle between the straight rod and the V-shaped rod becomes smaller, and the V-shaped rod rotates as a whole. The free end with the light source rotates, causing the height to rise, thus realizing the adjustment of the light source.

[0022] The beneficial effects of this invention are:

[0023] 1. When adjusting the light source angle, rotating the knob will cause the rotating rod located inside the base to rotate, which in turn drives the conveyor belt on the rotating rod to rotate. The other end of the conveyor belt is fitted onto a rotating shaft, which is equipped with an eccentric first roller group and a first gear. When these two rotate, they drive the push shaft to move up and down. The push shaft is fixedly connected to the lifting ring, which in turn drives the lifting ring to move up and down. A light source control rod is rotatably connected to the lifting ring. The up and down movement of the lifting ring changes the angle of the light source control rod, thereby adjusting the position of the light source and making the blood vessel model easier to observe. Specifically, when the lifting ring rises, the angle between the straight rod and the V-shaped rod decreases, and the V-shaped rod rotates as a whole. The free end with the light source rotates, causing the height to rise, thus achieving the adjustment of the light source.

[0024] 2. When it is necessary to rotate the vascular model, rotate the rotating gear, and through the meshing between the rotating gear and the central gear, drive the central gear to rotate, which in turn drives the central shaft to rotate, and finally drives the vascular model to rotate, so that the trainees around can observe the vascular model. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 2 This is a three-dimensional structural diagram of the fixing base and limiting structure of the present invention;

[0027] Figure 3 for Figure 2 Enlarged schematic diagram of part A of the structure;

[0028] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the transparent cover of the present invention;

[0029] Figure 5 for Figure 4 Enlarged schematic diagram of part A of the structure;

[0030] Figure 6 This is a three-dimensional structural diagram of the present invention without the fixing base and the transparent plate;

[0031] Figure 7 for Figure 6 Enlarged schematic diagram of part A of the structure;

[0032] Figure 8 for Figure 6 Enlarged schematic diagram of part B structure;

[0033] Figure 9 for Figure 6 Another perspective on the three-dimensional structure;

[0034] Figure 10 This is a three-dimensional structural diagram illustrating the connection relationship between the lifting ring and the limiting structure of the present invention;

[0035] Figure 11 This is a schematic diagram of the three-dimensional structure of the light source control rod;

[0036] Figure 12 A schematic diagram showing the vascular model setup in the vascular model demonstration device of this application, wherein the circled areas indicate lesion sites;

[0037] Figure 13 for Figure 12 The vascular model corresponds to a schematic diagram of the vascular system, obtained through CT scan, where the green part represents the lesion site;

[0038] Figure 14 This is a schematic diagram of the vascular system from another angle, where the green areas represent lesion sites;

[0039] Wherein: 1. Fixed base; 101. Base; 102. Receiving box; 102-1. Receiving groove; 103. Support platform;

[0040] 2. Central shaft; 201. Central gear; 202. Support plate; 203. Transparent plate; 204. Connecting pipe; 204-1. Limiting plate one; 204-2. Limiting plate two; 204-2-1. Rotating groove; 204-2-2. Rotating seat; 205. Lifting ring; 206. Light source control rod; 206-1. Straight rod; 206-2. V-shaped rod; 206-3. Light source; 207. Spring;

[0041] 3. Rotating assembly; 301. Rotating gear; 302. Rotating handle;

[0042] 4. Control components; 401. Drive shaft; 402. Second roller assembly; 403. Second gear; 404. Rotating shaft; 405. First roller assembly; 406. First gear;

[0043] Limiting structure; 501, limiting plate; 502, sliding groove; 503, rotating groove;

[0044] 6. Conveyor belt;

[0045] 7. Rotating rod; 701. Knob. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0047] The inventors discovered that existing display cases cannot adjust the light source according to the ambient light, making some blood vessels difficult to observe due to lighting angle issues, thus affecting students' understanding and teaching quality. Furthermore, some demonstration devices are difficult to rotate the angle of the blood vessel model, are complex to operate, and are not suitable for widespread use.

[0048] Based on the above findings, this application proposes a demonstration device for a 3D-printed peripheral vascular model. Two symmetrically arranged rotating gears 301 can rotate a meshing central shaft 2, thereby causing the vascular model to rotate. A connecting pipe 204 is sleeved on the central shaft 2, and a limiting disc 1 204-1 and a limiting disc 204-2 are integrally connected to the connecting pipe 204. A lifting ring 205 is provided on the limiting disc 1 204-1, and two sets of control components 4 are provided on both sides of the lifting ring 205, enabling it to slide up and down. A light source control rod 206 is rotatably connected to the lifting ring 205. The up-and-down movement of the lifting ring 205 adjusts the angle of the light source control rod 206, thereby adjusting the position of the light source 206-3, making the vascular model easier to observe. When the knob 701 is rotated, it can drive the rotating rod 7 located in the base 101 to rotate, which in turn drives the conveyor belt 6 on the rotating rod 7 to rotate. The other end of the conveyor belt 6 is sleeved on the rotating shaft 404. The rotating shaft 404 is provided with an eccentric first roller group 405 and a first gear 406. When the two roll, they drive the push shaft 401 to move up and down. The push shaft 401 is fixedly connected to the lifting ring 205, which in turn drives the lifting ring 205 to move up and down.

[0049] Example 1

[0050] See Figures 1-14 This application discloses a demonstration device based on a 3D printed peripheral blood vessel model, including a fixed base 1. The fixed base 1 includes an integrally connected base 101, a receiving box 102 and a support platform 103. A transparent cover is snapped onto the support platform 103 to protect and isolate the blood vessel model placed inside.

[0051] The top of the container 102 has a longitudinally opened receiving groove 102-1. A central shaft 2 is installed in the receiving groove 102-1. A central gear 201 is sleeved on the central shaft 2. The central gear 201 and the central shaft 2 are fixedly connected. A blood vessel model is installed on the top of the central shaft 2. When the central shaft 2 rotates, the blood vessel model rotates synchronously with the central shaft 2.

[0052] To improve the stability of the blood vessel model, a support plate 202 is integrally connected to the top of the central axis 2. A transparent plate 203 is fitted on the support plate 202, and the four sides of the transparent plate 203 match the transparent cover.

[0053] A rotating assembly 3 is provided on each side of the housing 102 to drive the central shaft 2 to rotate. The rotating assembly 3 includes an integrally connected rotating gear 301 and a rotating handle 302. The rotating gear 301 is located inside the housing 102, and the rotating handle 302 extends outward from both sides of the housing 102. By rotating either rotating handle 302, the rotating gear 301 can be driven to rotate, which in turn drives the central gear 201 to rotate through the meshing action between the rotating gear 301 and the central gear 201, thereby driving the central shaft 2 to rotate, and finally driving the blood vessel model to rotate, so that trainees at all angles can see the blood vessel model from all angles.

[0054] Example 2

[0055] In order to adjust the angle of the light source 206-3 as needed so that students can see the complete blood vessel details, a connecting tube 204 is sleeved on the central axis 2. Limiting disc one 204-1 and limiting disc two 204-2 are integrally connected to the connecting tube 204. A lifting ring 205 is provided on the limiting disc one 204-1. The lifting ring 205 is sleeved on the connecting tube 204 and can slide up and down between the limiting disc one 204-1 and the limiting disc two 204-2.

[0056] Two sets of control components 4 are provided on both sides of the lifting ring 205, which can drive the lifting ring 205 to slide up and down. The control component 4 includes a push shaft 401 fixedly connected to the lifting ring 205. A second roller group 402 and a second gear 403 are fixedly connected to the push shaft 401. The second roller group 402 and the second gear 403 are coaxially arranged but not on the same axis as the push shaft 401. That is, when the push shaft 401 rotates, the second roller group 402 and the second gear 403 rotate eccentrically.

[0057] The limiting plate 204-1 and the support platform 103 are on the same plane. The support platform 103 is provided with two sets of limiting structures 5, totaling four limiting plates 501, which are respectively set on both sides of the lifting ring 205. Each limiting plate 501 has a longitudinal sliding groove 502 and a rotating groove 503. The second roller group 402 and the second gear 403 are both located between two limiting plates 501. The two ends of the push shaft 401 pass through the rotating groove 503. A rotating shaft 404 is also provided in the sliding groove 502. The rotating shaft 404 passes through the sliding grooves 502 on both sides. The first roller group 405 and the first gear 406 are rotatably mounted on the rotating shaft 404. The first roller group 405 and the second roller group 402 mesh, and the first gear 406 and the second gear 403 mesh. The first roller assembly 405 and the first gear 406 are coaxially arranged but not on the same axis as the rotating shaft 404. That is, when the rotating shaft 404 rotates, the second roller assembly 402 and the second gear 403 rotate eccentrically.

[0058] A rotating rod 7 is installed inside the base 101. A knob 701 is installed at both ends of the rotating rod 7. A conveyor belt 6 is sleeved on the rotating rod 7. The other end of the conveyor belt 6 is sleeved on the rotating shaft 404. Since the conveyor belt 6 is close to the rotating handle 302, in order to avoid interfering with each other's work, two support rods are installed on the housing 102. The support rods are located on both sides of the rotating handle 302 and can support the conveyor belt 6 to avoid mutual interference with the rotating handle 302.

[0059] When knob 701 is rotated, it drives the rotating rod 7 located in base 101 to rotate, which in turn drives the conveyor belt 6 on the rotating rod 7 to rotate, which in turn drives the rotating shaft 404 to rotate. The rotating shaft 404 is eccentrically equipped with a first roller group 405 and a first gear 406. When the two rotate, they drive the meshing second roller group 402 and second gear 403 to rotate, which in turn drives the push shaft 401 to move up and down in the sliding groove 502. Since the push shaft 401 is fixedly connected to the lifting ring 205, it can also drive the lifting ring 205 to move up and down. The maximum distance that the push shaft 401 moves up and down in the sliding groove 502 is the sum of the longest radii of the first gear 406 and the second gear 403.

[0060] Three sets of light source control rods 206 are rotatably connected to the outer circumference of the lifting ring 205. Each light source control rod 206 includes a straight rod 206-1 and a V-shaped rod 206-2. A rotating groove 204-2-1 is formed along the radial direction on the limiting plate 204-2-2. A rotating seat 204-2-2 is disposed within the rotating groove 204-2-1. The rotating seat 204-2-2 is rotatably connected to the V-shaped rod 206-2, and the connection point between the rotating seat 204-2-2 and the V-shaped rod 206-2 is at the bifurcation point of the V-shaped rod 206-2. One free end of the V-shaped rod 206-2 is rotatably connected to the straight rod 206-1, and a light source 206-3 is disposed on the upper surface of the other free end. To limit the rising height of the lifting ring 205, a spring 207 is disposed between the lifting ring 205 and the limiting plate 204-2.

[0061] When the lifting ring 205 rises, it compresses the spring 207, the angle between the straight rod 206-1 and the V-shaped rod 206-2 decreases, and the V-shaped rod 206-2 rotates as a whole. The free end of the light source 206-3 rotates, causing the height to rise. The three light sources 206-3 illuminate the entire blood vessel model as much as possible under the refraction of the transparent plate 203 and the transparent cover, making it easy for trainees to observe from various angles.

[0062] The usage process of this invention is as follows:

[0063] 1. When it is necessary to rotate the blood vessel model, rotating any one of the rotating handles 302 can drive the rotating gear 301 to rotate. Then, through the meshing between the rotating gear 301 and the central gear 201, the central gear 201 is driven to rotate, which in turn drives the central shaft 2 to rotate, and finally drives the blood vessel model to rotate, so that trainees at all angles can see the blood vessel model from all angles.

[0064] 2. When the angle of the light source 206-3 needs to be adjusted, rotating the knob 701 will cause the rotating rod 7 located in the base 101 to rotate, which in turn causes the conveyor belt 6 on the rotating rod 7 to rotate, which in turn causes the rotating shaft 404 to rotate. The rotating shaft 404 is eccentrically equipped with a first roller group 405 and a first gear 406. When the two rotate, they drive the meshing second roller group 402 and the second gear 403 to rotate, which in turn causes the push shaft 401 to move up and down in the sliding groove 502. Since the push shaft 401 is fixedly connected to the lifting ring 205, it can also drive the lifting ring 205 to move up and down. When the lifting ring 205 rises, it compresses the spring 207, the angle between the straight rod 206-1 and the V-shaped rod 206-2 becomes smaller, and the V-shaped rod 206-2 rotates as a whole. The free end of the light source 206-3 rotates, causing the height to rise. The three light sources 206-3 illuminate the entire blood vessel model as much as possible under the refraction of the transparent plate 203 and the transparent cover, making it easy for trainees to observe from various angles.

[0065] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A demonstration device based on a 3D-printed peripheral vascular model, comprising a fixing base (1), characterized in that, Also includes: A central shaft (2) is set inside a fixed base (1), and a blood vessel model is set on its top. An adjustable light source (206-3) is set below the blood vessel model. The light source adjustment mechanism is located outside the central shaft (2) and can adjust the position of the light source (206-3); A connecting pipe (204) is sleeved on the central shaft (2). A limiting plate one (204-1) and a limiting plate two (204-2) are fixedly installed on the connecting pipe (204). A lifting ring (205) is provided between the limiting plate one (204-1) and the limiting plate two (204-2). The lifting ring (205) is provided with several sets of light source control rods (206), and the second limiting plate (204-2) is rotatably connected to the lifting ring (205) through the light source control rods (206); The light source control rod (206) includes a straight rod (206-1) and a V-shaped rod (206-2) that are rotatably connected. The straight rod (206-1) is rotatably connected to the lifting ring (205), and the V-shaped rod (206-2) is rotatably connected to the rotating groove (204-2-1) opened on the limiting plate (204-2). The light source (206-3) is set on the V-shaped rod (206-2). The light source adjustment mechanism includes a push shaft (401) disposed on both sides of the lifting ring (205). A second roller group (402) and a second gear (403) are disposed on the push shaft (401). The second roller group (402) and the second gear (403) mesh with a first roller group (405) and a first gear (406). The first roller group (405) and the first gear (406) are disposed on a rotating shaft (404).

2. The demonstration device based on a 3D-printed peripheral vascular model according to claim 1, characterized in that: Limiting plates (501) are respectively provided on both sides of the push shaft (401) and the rotating shaft (404). The limiting plates (501) are provided with sliding grooves (502) and rotating grooves (503). The push shaft (401) slides up and down in the sliding groove (502), and the rotating shaft (404) is located in the rotating groove (503).

3. The demonstration device based on a 3D-printed peripheral vascular model according to claim 2, characterized in that: A rotating rod (7) is provided inside the fixed base (1), and a conveyor belt (6) is provided between the rotating rod (7) and the rotating shaft (404).

4. The demonstration device based on a 3D-printed peripheral vascular model according to claim 3, characterized in that: A central gear (201) is provided on the central shaft (2), and the central gear (201) meshes with a rotating gear (301). When the rotating gear (301) rotates, it can drive the blood vessel model at the top of the central shaft (2) to rotate.

5. A method of using a demonstration device based on a 3D-printed peripheral vascular model, characterized in that: The specific steps of using the demonstration device based on a 3D-printed peripheral vascular model as described in any one of claims 1-4 are as follows: S1. When it is necessary to rotate the blood vessel model, rotate the rotating gear (301), and then through the meshing between the rotating gear (301) and the central gear (201), drive the central gear (201) to rotate, thereby driving the central shaft (2) to rotate, and finally drive the blood vessel model to rotate. S2. When it is necessary to adjust the angle of the light source (206-3), rotate the rotating rod (7), which in turn drives the conveyor belt (6) on the rotating rod (7) to rotate, which in turn drives the rotating shaft (404) to rotate. The rotating shaft (404) is eccentrically provided with a first roller group (405) and a first gear (406). When the two rotate, they drive the meshing second roller group (402) and the second gear (403) to rotate, which in turn drives the push shaft (401) to move up and down in the sliding groove (502). Since the push shaft (401) is fixedly connected to the lifting ring (205), it can drive the lifting ring (205) to move up and down. When the lifting ring (205) rises, the angle between the straight rod (206-1) and the V-shaped rod (206-2) becomes smaller, and the V-shaped rod (206-2) rotates as a whole. The free end of the light source (206-3) rotates, causing the height to rise, thereby realizing the adjustment of the light source (206-3).

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