CN206026344U - CT, DR belly emulation pathological change scanning detecting body mould - Google Patents

Abstract

The utility model discloses a CT, DR belly emulation pathological change scanning detecting body mould, including fixing device and test module, fixing device includes casing, hoisting device and closing device, be equipped with the baffle in the casing, the baffle divide into the test chamber of top and the device compartment of below with the casing inner space, be fixed with the hoisting device who stretches into in the test chamber on the baffle bottom surface, the casing top is equipped with the bung, the bung bottom surface is to having closing device, test module places between hoisting device and closing device, test chamber uses the aquogel to fill. The utility model discloses a fixing device and test module, fixing device adopt hoisting device and the many test module of closing device to fix, can realize automatic level adjustment to test module, and test module adopts 3D entity printing technique, can generate multiple focus structure in a flexible way to diseased organ can dismantle and change the outfit the same organ of different pathological changes, the practicality is strong.

Description

CT, DR abdominal simulation lesion scanning detection phantom

technical field

The utility model specifically relates to a CT and DR abdomen simulation lesion scanning detection phantom, which can be used for medical imaging detection and physical damage simulation test.

Background technique

The use of medical imaging systems such as CT and DR has laid an important foundation for medical treatment and is a fundamental guarantee to help doctors make correct diagnosis of lesions. At present, there are many phantoms in the world that simulate the static tissue of the human body and are used in clinical teaching and scientific research. However, the organ structure of the phantom can only simply simulate the image display in the normal state of the human body. The structure is also fixed and cannot flexibly simulate the intra-abdominal cavity. The images of various lesion forms in multiple organs are difficult to meet the needs of various clinical lesion display in teaching and scientific research. At the same time, the test device is too simple to realize automatic clamping, loosening, and automatic leveling. At the same time, medical imaging phantoms only pay attention to the similarity of physical shape, not the similarity of tissue density, which makes the phantom unable to be used for human physical damage simulation, such as: collision damage test, high-altitude drop test.

Utility model content

In order to solve the above problems, the utility model proposes CT and DR abdominal simulation lesion scanning detection phantom. The utility model includes a fixing device and a testing module. The level of the test module is adjusted. The test module adopts 3D solid printing technology, which can flexibly generate a variety of lesion structures, and the diseased organ can be disassembled and replaced with the same organ with different lesions, which is very practical. At the same time, the tissue density of the phantom is close to that of the human body, which can physically simulate the physical damage of the human body and reflect the internal conditions of the damage by imaging.

In order to achieve the above object, the utility model adopts the following technical solutions:

CT, DR abdominal simulation lesion scanning detection phantom, including a fixing device and a test module, the fixing device includes a housing, a lifting device and a pressing device, a partition is arranged inside the housing, and the partition divides the inside of the housing The space is divided into the upper test chamber and the lower equipment chamber. A lifting device extending into the test chamber is fixed on the bottom surface of the partition. A compression device, the test module is placed between the lifting device and the compression device, and the test cavity is filled with hydrogel.

The lifting device includes a test platform, a motor, a lifting screw, a guide sleeve and a lifting screw nut. The guide sleeve is fixed on the lower surface of the partition, and the lifting screw nut capable of moving along its axial direction is arranged inside the guide sleeve. , the guide sleeve and the lifting screw nut are positioned by a flat key and are guided by the lifting screw nut. The top of the lifting screw nut is fixed with a test platform, and the bottom is set on the upper end of the lifting screw rod. The lower end of the lifting screw rod is connected to the The motor is fixed on the bottom surface of the housing, and a retractable protective cover is arranged between the bottom surface of the test platform and the upper surface of the separator. After the test platform is contracted, the phantom drop experiment test within a fixed distance can be realized.

The test platform includes a fixed plate, a leveling ball and a storage table, the center of the fixed plate is provided with a leveling ball with the spherical surface facing upwards, a storage table is placed on the leveling ball, and the bottom four corners of the storage table are upward A leveling rod is provided below, and the leveling rod passes through the corresponding first through hole on the fixing plate and is fitted with a spring, and the spring is compressed by a gasket and fixed by a nut.

The protective cover is a waterproof silicone film.

The pressing device includes a connecting rod, a cover plate and a pressing plate. The top end of the connecting rod is fixed on the bottom surface of the bucket cover, and a ball is arranged at the bottom end. The connecting rod is covered with a cover plate, and the cover plate and The pressing plate is fixed, and the ball is located between the cover plate and the pressing plate.

The test modules include the isthmus fracture module, lumbar compression fracture module, liver disease module and kidney disease module.

The beneficial effects of the utility model are:

(1) The utility model includes a fixing device and a test module. The fixing device adopts a lifting device and a pressing device to fix multiple test modules, which can automatically adjust the level of the test module. The test module adopts 3D solid printing technology, which can be flexibly generated A variety of lesion structures, and the diseased organs can be disassembled and replaced by the same organ with different lesions, which is very practical;

(2) The lifting device of the present utility model can adjust the lifting and lowering of the test module, and its test platform adopts an automatic adjustment mode, which can automatically adjust the angle of the storage platform plane according to the placement of the test module;

(3) The pressing device of the utility model can rotate around the ball at the end of the connecting rod, and automatically cooperate with the storage table, so that the placement of the test module is more stable.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the lifting device of the present invention;

Fig. 3 is the utility model test platform structural representation;

Fig. 4 is the structural schematic diagram of the pressing device of the present utility model;

Among them, 1. shell, 2. partition, 3. lifting device, 4. pressing device, 5. barrel cover, 6. test module, 7. test chamber, 8. equipment chamber, 31. motor, 32. lift Screw rod, 33, guide sleeve, 34, lifting nut, 35, test platform, 36, protective cover, 37, second through hole, 38, flat key, 351, fixed plate, 352, leveling ball, 353, storage Platform, 355, leveling bar, 356, spring, 357, spacer, 358, nut, 41, connecting rod, 42, cover plate, 43, pressing plate.

detailed description:

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Fig. 1, CT, DR abdominal emulation lesion scan detection phantom, comprise fixing device and test module 6, described fixing device comprises casing 1, lifting device 3 and pressing device 4, and described casing 1 is horizontal A barrel with an elliptical cross-section is used to imitate the abdomen of a human body. Its tissue density and size are the same or close to those of human tissue. 1. The internal space is divided into the upper test chamber 7 and the lower equipment chamber 8. The lifting device 3 extending into the test chamber 7 is fixed on the bottom surface of the partition plate 2. The top of the housing 1 is provided with a bucket cover 5. The bottom surface of the bung 5 is provided with a compression device 4 downward, the test module 6 is placed between the lifting device 3 and the compression device 4, and the test cavity 7 is filled with hydrogel to form a body shape and Structural models with similar densities.

As shown in Figure 2, the lifting device 3 includes a test platform 35, a motor 31, a lifting screw 32, a guide sleeve 33 and a lifting nut 34, the guide sleeve 33 is fixed on the lower surface of the partition 2, and the guide sleeve 33 is fixed on the lower surface of the partition plate 2. The sleeve 33 is provided with a lifting screw nut 34 that can move along its axial direction. The flat key 38 is positioned between the guide sleeve 33 and the lifting screw nut 34 and is guided by the lifting screw nut 34. The top of the lifting screw nut 34 A test platform 35 is fixed, the bottom is set on the upper end of the lifting screw 32, and the lower end of the lifting screw 32 is connected with the motor 31 fixed on the bottom surface of the housing 1, and the bottom surface of the test platform 35 and the upper surface of the partition plate 2 are provided. There is a retractable protective cover 36 . The protective cover 36 is a waterproof silica gel film, which can isolate the hydrogel in the test chamber 7 from the lifting device 3, so that the lifting device 3 is in an airtight dry space to avoid its damage. This silica gel film has a certain Elasticity can elongate thereupon when lifting device 3 rises, and return to its original shape when descending.

As shown in Figure 3, the test platform 35 includes a fixed plate 351, a leveling ball 352 and a storage table 353, the center of the fixed plate 351 is provided with a leveling ball 352 with a spherical surface upward, and the leveling ball 352 is placed with The storage platform 353, the four corners of the bottom of the storage platform 353 are provided with leveling rods 355 downwards, and the leveling rods 355 pass through the corresponding first through holes on the fixing plate 351 and are covered with springs 356, and the springs 356 is compressed by gasket 357 and fixed with nut 358. This structure can make the storage table 353 automatically adjust according to the size of the force when it receives the effect of unequal force, so that the upper plane of the storage table 353 reaches a state of force balance, for example , when one of the leveling rods 355 is under pressure, this position drops, the spring 356 on the leveling rod 355 relaxes, and correspondingly, the leveling rod 355 opposite to it rises, this time The spring 356 on the leveling rod 355 is compressed, and the storage platform 353 is tilted, and the springs 356 on the other two leveling rods 355 also change thereupon, so that the storage platform 353 is balanced. The second through hole 37 corresponding to the leveling rod 355 is also provided on the partition, and the second through hole 37 passes through the leveling rod 355 when the test platform 35 descends, so that the leveling rod 355 does not occupy the test cavity 7 space, the structure is more compact.

As shown in Fig. 4, described pressing device 4 comprises connecting rod 41, cover plate 42 and pressing plate 43, and the top end of described connecting rod 41 is fixed on the bottom surface of bucket lid 5, and the bottom end is provided with spherical ball, and described connecting A cover plate 42 is set on the rod 41, and the cover plate 42 is fixed to the pressing plate 43. The ball is located between the cover plate 42 and the pressing plate 43. When the pressing plate 43 is subjected to an unbalanced force, the pressing plate 43 can rotate around the ball. reach the specified position.

The test module 6 includes a fracture module of the isthmus, a module of compression fracture of the lumbar spine, a module of liver disease and a module of kidney disease.

Among the various clinical lesions of the lumbar spine, bone fractures in the isthmus of the spondylois belong to a small number of cases, and the location of the bone fracture is relatively hidden. The body position for checking it is the oblique position of the lumbar spine. Due to the obstruction of other tissues, the bone fracture is sometimes overlooked. CT scans are used to obtain Image display is better. Since it is not easy to find such examples in the teaching process, we choose to use models instead of people. This will not only allow students to master the method of posture examination, but also reduce the radiation dose of the examinee. The isthmus fracture module includes a bone model of the isthmus made by 3D printing and a lesion fracture located thereon. The bone model of the isthmus of the vertebral arch is made of barium-containing high-density resin material, and the isthmus of the vertebral arch has lesion cracks, and the lesion cracks are in the shape of "herringbone" or "one". Its shape, size and density are highly similar to the normal structure of the human body, and the images obtained by DR photography and CT scanning have a high degree of agreement with the real human body images, so that this body membrane can replace the human body for teaching and scientific research.

Among various clinical lesions of the lumbar spine, lumbar compression fractures are more common, especially in the elderly. The reason is that the lumbar compression fractures are prone to occur in the elderly because of their osteoporosis, insufficient strength and elasticity. Routine examination using DR photography is effective, and images obtained by CT scanning can show fractures inside the vertebral body. Using models to replace people in teaching can achieve better teaching and protection effects.

The lumbar compression fracture module includes a 3D printed lumbar model and fracture lesions thereon. The lumbar spine model is made of high-density resin material. The vertebral body of the lumbar spine is made into a wedge-shaped structure similar to lumbar compression fractures. There are fracture lines inside the vertebral body. Its shape, size and density are highly similar to the normal structure of the human body. Use DR photography and CT scanning to obtain images with a high degree of similarity to real human body images.

An effective method for the detection of liver cancer lesions is CT scan, which displays multiple sectional images of lesions of different sizes in different layers. The density of normal tissue and cancer tissue is quite different, and the contrast is obvious.

The liver lesion module includes a liver model made by 3D printing and cancerous lesions on it. The liver disease model is made of resin materials, such as resin silica gel, which simulates normal tissues and cancer lesions. There should be differences in the absorption of X-rays. There are three cancer lesions, and the diameters of the lesions are 1.5cm, 2.5cm and 3.5cm, the physical material of the lesion is hot melt adhesive, so that the actual lesion image can be better simulated.

An effective method for the examination of renal tumor lesions is CT scan. Renal tumors are mostly solitary, and the density difference between normal tissue and cancerous tissue is large, and the contrast is obvious, which is easy to identify.

The kidney lesion module includes a kidney model made by 3D printing and tumor lesions on it. This model selects the structure of renal aneurysm, which is larger than normal tissue and has obvious contrast effect. It is still made of resin material. The tumor lesion is elliptical, with a long axis of 2.5cm and a short axis of 1.5cm.

Although the specific implementation of the utility model has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the utility model. Those skilled in the art should understand that on the basis of the technical solution of the utility model, those skilled in the art do not need to Various modifications or deformations that can be made with creative efforts are still within the protection scope of the present utility model.

Claims (6)

1.CT, DR abdominal emulation lesion scanning detection phantom, it is characterized in that: comprise fixing device and test module, described fixing device comprises housing, lifting device and pressing device, is provided with dividing plate in described housing, described The partition divides the internal space of the housing into the upper test chamber and the lower equipment chamber. A lifting device extending into the test chamber is fixed on the bottom of the partition. The top of the housing is provided with a bucket cover. The bucket A compression device is provided downward on the bottom of the cover, the test module is placed between the lifting device and the compression device, and the test cavity is filled with hydrogel. 2. CT, DR abdominal emulation lesion scanning detection phantom as claimed in claim 1, is characterized in that: described lifting device comprises test platform, motor, lifting screw mandrel, guide sleeve and lifting nut, and described guide sleeve is fixed On the lower surface of the partition, the guide sleeve is provided with a lifting screw nut that can move along its axial direction. The guide sleeve and the lifting screw nut are positioned by a flat key and are guided by the lifting screw nut. The top of the female is fixed with a test platform, and the bottom is set on the upper end of the lifting screw. The lower end of the lifting screw is connected to the motor fixed on the bottom of the shell. safety mask. 3. CT, DR abdominal emulation lesion scanning detection phantom as claimed in claim 2, is characterized in that: described test platform comprises fixed plate, leveling ball and storage table, and described fixed plate center is provided with the adjustment of spherical surface upwards. A leveling ball, a storage platform is placed on the leveling ball, leveling rods are arranged downwards on the four corners of the bottom of the storage table, and the leveling rods pass through the corresponding first through holes on the fixing plate and are set with The spring is compressed by a washer and fixed by a nut. 4. The CT, DR abdomen simulation lesion scanning detection phantom as claimed in claim 2, characterized in that: the protective cover is a waterproof silica gel film. 5. CT, DR abdominal simulation lesion scanning detection phantom as claimed in claim 1, is characterized in that: described pressing device comprises connecting rod, cover plate and pressing plate, and the top end of described connecting rod is fixed on the bottom surface of bucket lid The top and the bottom end are provided with a ball, the connecting rod is covered with a cover plate, the cover plate is fixed with the pressure plate, and the ball is located between the cover plate and the pressure plate. 6. The CT and DR abdominal simulation lesion scanning detection phantom according to claim 1, characterized in that: the test modules include a bone fracture module in the isthmus of the spondylois, a lumbar compression fracture module, a liver lesion module, and a kidney lesion module.