CN212873819U

CN212873819U - Splicable spine model

Info

Publication number: CN212873819U
Application number: CN202021723050.XU
Authority: CN
Inventors: 马超; 陆菁菁; 张丁月
Original assignee: Institute of Basic Medical Sciences of CAMS
Current assignee: Institute of Basic Medical Sciences of CAMS
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-04-02
Anticipated expiration: 2030-08-18

Abstract

The utility model relates to a can splice backbone model, including vertebra model and spinal model, each vertebra is inside to be provided with the magnet that is located below the engaging surface of vertebra in the vertebra model, and each vertebra can dismantle each other and join in engaging surface department according to the magnetic attraction of the physiological curvature of human backbone through magnet to form the vertebra model that has required curvature, the spinal model is arranged in by the engagement of each vertebra and the spinal canal that forms, the spinal model is flexible to adapt to the different curvatures of vertebra model. The utility model discloses a vertebra model and spinal model mutually support, are connected through magnetic force detachably between the vertebra, can simulate different human backbone physiology crookedness with different angle rejoins through dismantling, and flexible spinal model can cooperate the crookedness of vertebra model well.

Description

Splicable spine model

Technical Field

The utility model belongs to medical science teaching model field, concretely relates to backbone model can splice.

Background

The spinal structure is a strut of the human body and plays an important basic role in understanding the human structure, but 33 vertebrae (the 5 sacral vertebrae and the 4 caudal vertebrae in adults are healed), have different shapes and complex connection, and are the key points and difficulties of various medical colleges in the teaching of orthopedics. In practice, a common learning resource is 3D anatomical software, but the 3D software modeling is rough and cannot accurately display the detailed structure of the vertebra; another learning material is a medical atlas, but the medical atlas can only show three-dimensional structures through different views, which causes difficulty for students to understand, and is limited by space, can only show characteristic vertebral structures, and cannot compare slight differences between vertebrae. There are also true human spine specimens that are used, but are limited in number and easily damaged.

Compared with three-dimensional software with an insufficiently fine structure representation and a planar medical map, the physical model can show the fine structure of the vertebra and the connection mode between the adjacent vertebrae, and is convenient to memorize and operate. However, the spine model on the market at present is simplified, the accurate shape of each vertebra cannot be accurately shown, the whole model is difficult to disassemble, the structure of the contact part between the vertebrae cannot be observed and operation and study are carried out, and the vertebrae and the intervertebral discs are connected through penetrating structures, the vertebral joints are separated, and the ligament connection between the vertebral joints in the real human body cannot be embodied. In addition, the physiological curvature of the spine of each human body is different, however, once the model on the market is manufactured, the curvature of the model is determined and cannot be changed, so that the curvature of the model cannot be changed according to the curvature of the spine of different individuals.

It is thus clear that current teaching aid can't satisfy the teaching demand, and the urgent need provides the backbone model of an accuracy, durable, the concatenation operation of being convenient for.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can splice backbone model, wherein each vertebra detachably splices, and a backbone model just can be through dismantling with different angles rejoining come the different human backbone physiology crookedness of simulation.

The utility model aims at realizing through the following technical scheme:

a spliceable spinal model comprising a vertebral model in which respective vertebrae are internally provided with magnets located below engagement surfaces of the vertebrae, the respective vertebrae being detachably engaged with each other at the engagement surfaces by magnetic attraction of the magnets in accordance with physiological curvature of a human spine to form the vertebral model having a desired curvature, and a spinal cord model placed in a spinal canal formed by engagement of the respective vertebrae, the spinal cord model being flexible to accommodate different curvatures of the vertebral model.

Preferably, the magnets are embedded in the interior of the mating articular processes of the respective vertebrae adjacent to the engaging surfaces, the magnets in the mating engaging articular processes being poled in opposition.

Preferably, the magnet is cylindrical or plate-shaped.

Preferably, each vertebra in the vertebra model is made of a photosensitive resin material by 3D printing.

Preferably, the spinal cord model has strength and flexibility compatible with the spinal canal.

Preferably, the spinal cord model is made of a nylon material by 3D printing.

Preferably, the vertebral model comprises seven cervical vertebrae, twelve thoracic vertebrae, five lumbar vertebrae, one sacrum and one coccyx.

Preferably, the spinal cord model includes the medulla oblongata, the entire spinal cord, and a partial cauda equina.

The utility model has the advantages that:

1. the utility model discloses a each vertebra that can splice backbone model relies on the mutual concatenation of magnetic force of magnet, and the angle that matches each other can be adjusted in the dismantlement of being convenient for to can carry out the activity of minimalistic range, consequently can change the crookedness of model according to the human backbone physiology crookedness of difference.

2. The spinal model is flexible, has certain strength and elasticity, can adaptively change the curvature of the spinal model according to different curvatures of the vertebral model, and truly reflects the state of the spinal cord of a real human body.

3. The utility model has the advantages of sufficient raw material sources, simple manufacture, low price, firm material and difficult damage by using 3D printing to manufacture each element, and can fully display various fine structures on the vertebra; the vertebrae are connected by the magnet and can be detached independently, so that the omnibearing three-dimensional structure and the connection mode between the vertebrae can be observed conveniently, students can understand the structure of the vertebral column visually, and surgeons can practice the operation.

Drawings

Fig. 1 is a schematic structural diagram of a splittable spine model according to an embodiment of the present invention.

Fig. 2 is a schematic view illustrating a connection state between vertebrae according to an embodiment of the present invention.

Fig. 3a to 3g are schematic structural views of a part of vertebrae in a vertebral model according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a spinal cord model according to an embodiment of the present invention.

Description of reference numerals:

1-vertebral model; 2-spinal cord model; 3-articular process; 4-a magnet; 101-atlas; 102-the axis of the spine; 103-seventh cervical vertebra; 104-thoracic vertebra; 105-lumbar vertebra; 106-sacrum; 107-coccyx.

It is to be understood that the appended drawings are not to scale, but are merely drawn with appropriate simplifications to illustrate various features of the basic principles of the invention. Specific design features of the invention disclosed herein, including, for example, specific dimensions, orientations, locations, and configurations, will be determined in part by the particular intended application and environment of use. In the several figures of the drawings, identical or equivalent components (elements) are referenced with the same reference numerals.

Detailed Description

The present invention will be further described with reference to the following detailed description and accompanying drawings.

As shown in fig. 1 to 2, the splittable spine model according to the embodiment of the invention comprises a vertebra model 1 and a spinal model 2, wherein a magnet 4 located below the joint surface of the vertebra is arranged inside each vertebra in the vertebra model 1, each vertebra is detachably jointed with each other at the joint surface through the magnetic attraction force of the magnet 4 according to the physiological curvature of the spine of the human body to form the vertebra model 1 with a required curvature, the spinal model 2 is arranged in the vertebral canal formed by the jointing of each vertebra, and the spinal model 2 is flexible to adapt to different curvatures of the vertebra model 1.

Each vertebra relies on the mutual concatenation of magnetic force of magnet 4, and the angle that matches each other can be adjusted in the dismantlement of being convenient for to can carry out the activity of minizone, consequently can change the crookedness of model according to the human backbone physiology crookedness of difference. The flexible spinal cord model 2 fits well to the curvature of the vertebral model 1.

As shown in fig. 2, according to the embodiment of the present invention, the magnets 4 are embedded in the inner portions of the articular processes 3 where the respective vertebrae are mated with each other, adjacent to the engaging surfaces, and the polarities of the magnets 4 in the two articular processes 3 where the vertebrae are mated with each other are attracted to each other. Of course, the position of the magnet 4 is not limited to the articular process 3, and those skilled in the art can set the position as appropriate according to actual needs. Can reserve the mounting hole that is used for magnet 4 through 3D printing technique just at the junction surface department on the vertebra when making each vertebra, after embedding the mounting hole with magnet 4, reuse gluing material to seal magnet 4 in the mounting hole. The magnet 4 is embedded in the vertebra, so that the influence of the magnet 4 on the shape of the vertebra is avoided, and the shape of the vertebra is more consistent with the shape of the real human vertebra.

According to an embodiment of the present invention, the magnets 4 are embedded according to the form of the respective articular processes 3 of the respective vertebrae so that the articular processes 3 matching each other can be well engaged, and the magnets 4 may be columnar or sheet-shaped.

According to the utility model discloses an embodiment, each vertebra shape in vertebra model 1 is based on the three-dimensional reconstruction modeling of real person CT and is made through 3D printing by photosensitive resin material. Alternatively, the individual vertebrae of the vertebral model 1 can also be formed in other materials and manners, for example by injection molding.

The utility model discloses a spinal model is connected and is matched with spinal model 2 that has certain intensity and elasticity through vertebra model 1's magnetic force, makes the joint carry out small amplitude activity, and spinal model is whole can the front and back bending, spinal motion under the reduction physiological condition.

According to the embodiment of the present invention, the vertebral model 1 has twenty-six vertebrae, including seven cervical vertebrae, twelve thoracic vertebrae, five lumbar vertebrae, one sacrum and one coccyx. A schematic view of a part of the vertebrae is shown in fig. 3a to 3g, wherein the atlas 101 (first cervical vertebra) is shown in fig. 3a, the axis 102 (second cervical vertebra) is shown in fig. 3b, the seventh cervical vertebra 103 is shown in fig. 3c, the thoracic vertebra 104 (exemplified by T1) is shown in fig. 3d, the lumbar vertebra 105 (exemplified by L1) is shown in fig. 3e, the sacrum 106 is shown in fig. 3f, and the coccyx 107 is shown in fig. 3 g. Figures 3a to 3g also schematically show magnets 4 embedded in the respective vertebrae, the magnets 4 being enclosed inside the vertebrae without affecting the shape of the vertebrae, enabling a more realistic simulation of the connection between the vertebrae.

As shown in fig. 4, according to an embodiment of the present invention, the spinal cord model 2 includes a medulla oblongata, a complete spinal cord and a partial cauda equina. The spinal model 2 is made of nylon material by 3D printing, which has a certain strength and elasticity adapted to the spinal canal. Alternatively, the spinal cord model 2 may be formed using other materials and methods, so long as it provides a certain strength and elasticity. The curvature of the spinal model 2 is consistent with that of the spinal when the human body is naturally upright, the shape conforms to the real shape, the diameter is reduced in an equal ratio so as to be placed in the vertebral canal, the physiological curvature and the complete shape of the spinal column are ensured to the maximum extent, support is provided for the model, and the mobility is ensured. The spinal model 2 conforms to physiological curvature and has certain strength, and can be placed in a vertebral canal to provide angular support.

The spinal cord provides support, and physiological curvature can be ensured; the magnetic connection is convenient to disassemble and assemble, the movement among joints can be restored, and the real joint connection condition can be embodied (because the real vertebrae are connected by ligaments, the joints in the model on the market are separated, the movable range is too large, and the movable range is not consistent with the reality).

The utility model has the advantages of sufficient raw material sources, simple manufacture, low price, firm material and difficult damage by using 3D printing to manufacture each element, and can fully display various fine structures on the vertebra; the vertebrae are connected by the magnet 4 and can be detached independently, so that the omnibearing three-dimensional structure and the connection mode between the vertebrae can be observed conveniently, students can understand the structure of the vertebral column visually, and surgeons can practice the operation.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. The foregoing description is not intended to be exhaustive or to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable others skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications thereof.

Claims

1. A spliceable spinal model comprising a vertebral model in which each vertebra is internally provided with a magnet located below an engagement surface of the vertebra, each vertebra being detachably engaged with each other at the engagement surface by magnetic attraction of the magnet according to physiological curvature of a human spine to form the vertebral model having a desired curvature, and a spinal cord model placed in a spinal canal formed by engagement of each vertebra, the spinal cord model being flexible to accommodate different curvatures of the vertebral model.

2. The spliceable spinal model of claim 1, wherein the magnets are embedded within the respective vertebrae adjacent to the inner engaging surfaces of the mating articular processes, the magnets in the mating engaging articular processes being poled in opposition.

3. The spliceable spine model according to claim 1, wherein the magnets are cylindrical or plate-shaped.

4. The tileable spine model according to claim 1, characterized in that each vertebra in the vertebra model is made of a photosensitive resin material by 3D printing.

5. The spliceable spinal model of claim 1, wherein the spinal cord model has strength and flexibility compatible with the spinal canal.

6. The spliceable spinal model of claim 1, wherein said spinal cord model is made of nylon material by 3D printing.

7. A spliceable spine model according to any of claims 1-6, characterized in that said vertebral model comprises seven cervical vertebrae, twelve thoracic vertebrae, five lumbar vertebrae, one sacrum and one coccyx.

8. The spliceable spinal model of claim 7, wherein the spinal cord model includes a medulla oblongata, a complete spinal cord and a partial cauda equina.