Teaching model of orthopaedic vertebroplasty technology and rollover manufacturing tool thereof

Abstract

The utility model discloses a teaching model of orthopaedic vertebroplasty technology and a rollover manufacturing tool thereof, comprising a mold, the mold is composed of an accommodating body and a cover plate, the cover plate is fixed on the upper surface of the accommodating body to form an injection molding cavity, and symmetrical pin holes are arranged in the center of the upper surface of the cover plate. The outline of an inner cavity of the containing body is arranged according to the radian of the surface of the back of a human body, when the cover plate is fixed to the upper surface of the containing body, an orthopedic vertebral body is attached to the inner surface of the cover plate, a steel needle penetrates through a needle inserting hole to penetrate into the orthopedic vertebral body to be fixed, and pouring liquid is poured into a mold to be cooled to form the teaching model of the orthopedic vertebral body forming technology. The spine model is formed by connecting a plurality of vertebral bodies end to end, the head end and the tail end of the spine model are connected with fixing blocks, and the fixing blocks are made of soft materials. The mold can be improved according to the displayed patient condition, and the inner contour of the mold is designed to be of the same structure as the curved surface of the back of the patient, so that simulation is more accurate after model manufacturing.

Description

Technical Field

[0001] The utility model belongs to the field of medical teaching models, in particular to a teaching model of orthopedic vertebral body shaping technology and a mold making tool thereof. Background Art

[0002] Vertebroplasty technology is often used in the surgical treatment of osteoporotic vertebral fractures in the elderly. At present, the clinical teaching of orthopedic vertebroplasty technology mostly remains in books, and the real learning of orthopedics requires clinical operations, but patients are often used for teaching. Considering factors such as safety, rigor and patient compliance, the effect is often mediocre, which cannot achieve good teaching effect and there are potential risks to patient safety.

[0003] A Chinese patent discloses a 3D-printed vertebral model for pedicle fixation (CN204596300U), which includes a 3D-printed vertebral body, a screw entry point range area, and a screw entry hole. The invention is characterized in that the screw entry point range area is set at the miter crest of the vertebral body, the screw entry hole is set within the vertebral body and passes through the pedicle. The depth of the screw entry hole is controlled not to penetrate the vertebral body, and the direction of the screw entry hole is controlled not to rush out of the pedicle. A realistic vertebral body template is obtained through 3D printing technology. The setting of the screw entry point range area allows observers to understand the selection of the screw entry point position. The setting of multiple screw entry holes allows the operator to personally insert the screw and understand the insertion direction, depth, and selectable range. The separated vertebral body allows the operator to more intuitively understand the path and direction of the screw entry hole within the pedicle.

[0004] Existing teaching models are basically made directly from the spine, but this model is not suitable for the operational teaching of shell surgery for the treatment of senile osteoporotic vertebral fractures. During the actual operation, the spine is blocked by muscles, nerves and skin and cannot be seen intuitively. Therefore, it is necessary to make a mold based on the patient's actual situation and then conduct teaching operations before actual operation. Utility Model Content

[0005] In order to solve the above problems, the present invention adopts the following technical solutions.

[0006] A mold making tool for orthopedic vertebral shaping technology includes a mold, which consists of a container and a cover plate. The cover plate is fixed to the upper surface of the container to form an injection molding cavity. Symmetrical pin holes are opened in the center of the upper surface of the cover plate. The inner cavity contour of the container is opened according to the curvature of the human back surface. When the cover plate is fixed to the upper surface of the container, the orthopedic vertebra is fitted to the inner surface of the cover plate, and a steel needle is inserted into the orthopedic vertebra through the pin hole for fixation. The casting liquid is poured into the mold and cooled to form an orthopedic vertebral teaching model.

[0007] Support bars are integrally connected to the edges of both sides of the upper surface of the container, and the distance between the support bars is equal to the length of the cover plate. A pair of connecting blocks are connected to the outside of the support bars, and connecting holes are opened on the connecting blocks.

[0008] An embedding groove is provided on the upper surface of the containing body, and the embedding groove is provided at the center of the wall thickness.

[0009] There are holes on both sides of the upper surface of the cover. When the cover covers the upper surface of the container, the holes on the upper surface of the cover are concentric with the connecting holes on the connecting block. Fixing bolts are inserted into the holes on the upper surface of the cover, and fastening nuts are provided on the fixing bolts.

[0010] A sealing strip is arranged on the inner surface of the cover plate, and the direction of the sealing strip is arranged according to the periphery of the upper surface of the containing body.

[0011] Accordingly, the present application provides a teaching model of orthopedic vertebral shaping technology, which is fixed in a mold making tool of orthopedic vertebral shaping technology and formed by injection molding. The orthopedic model includes a spinal model, which is composed of multiple vertebrae connected end to end. Fixed blocks are connected at both ends of the spinal model, and the fixed blocks are made of soft material.

[0012] The soft material of the fixing block is specifically one of rubber or silicone.

[0013] The lower surface of the vertebral body is symmetrically connected with the transverse processes, and the lower surfaces of a pair of transverse processes are commonly connected with the spinous processes. A vertebral foramen is formed between the transverse processes and the spinous processes. The anterior surfaces of the transverse processes are also integrally connected with the articular processes and mastoid processes.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This application is divided into two parts. One of them is a teaching model manufactured according to needs. The teaching model is made of the corresponding spinal bones according to the needs of orthopedic clinical teaching. The teaching model is placed on the surgical platform and the required placement angle is adjusted according to needs. Then, simulated surgical operations are performed to carry out teaching work, making teaching more convenient, firm and highly operational. The teaching model can simulate the operating process of vertebral plastic surgery and simulate the entire process of vertebral plastic surgery.

[0016] The entire mold is composed of three parts: a cover plate, a container and a fixing component. After the cover plate and the container are assembled and formed into a whole using the fixing component, the foaming agent is injected into the mold tool, and then the mold is demolded to produce a vertebral body shaping technology teaching model, which is used for teaching model surgical treatment of vertebral body shaping technology. The mold can be improved according to the patient's condition, and the inner contour of the mold is designed to have the same structure as the patient's back curve, so that the simulation after the model is made is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Assemble the overall structure diagram of the mold and its spine.

[0018] Figure 2 This is the overall structural diagram of the container.

[0019] Figure 3 This is the overall structure diagram of the cover.

[0020] Figure 4 This is a diagram of the overall structure of the spine.

[0021] Figure 5 A diagram of the structure of a single vertebra.

[0022] The corresponding relationship between the illustration labels and component names in the figure is as follows:

[0023] 100. Mold; 101. Container; 101a. Embossed groove; 101b. Support bar; 101b-1. Connecting block; 102. Cover plate; 102a. Sealing strip; 102b. Pinhole; 102c. Fixing bolt; 102c-1. Fastening nut; 200. Vertebral model; 201. Vertebral body; 202. Transverse process; 203. Articular process; 204. Spinous process; 205. Mastoid process; 206. Vertebral foramen. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0027] See also Figure 1-3A mold making tool for orthopedic vertebral shaping technology includes a mold 100. The mold 100 consists of a container 101 and a cover plate 102. The cover plate 102 is fixed on the upper surface of the container 101 to form an injection molding cavity. A symmetrical pinhole 102b is opened in the center of the upper surface of the cover plate 102. The inner cavity contour of the container 101 is opened according to the curvature of the human back surface. When the cover plate 102 is fixed on the upper surface of the container 101, the orthopedic vertebra is fitted to the inner surface of the cover plate 102, and a steel needle is used to penetrate the pinhole 102b into the orthopedic vertebra for fixation. The casting liquid is poured into the mold 100 and cooled to form an orthopedic vertebral teaching model.

[0028] exist Figure 2 In order to make the cover plate 102 more stable when it is overlapped on the container 101, one solution is to increase the contact area between the cover plate 102 and the container 101. Therefore, the present application has support strips 101b integrally connected to the edges of both sides of the upper surface of the container 101. The spacing between the support strips 101b on both sides is equal to the length of the cover plate 102. When the cover plate 102 is overlapped on the container 101, the support strips 101b increase the contact area between the container 101 and the cover plate 102. Furthermore, in order to connect the cover plate 102 and the container 101 to form a whole, a pair of connecting strips 101b are connected to the outside of the support strips 101b. Block 101b-1, a connecting hole is opened on the connecting block 101b-1, and holes are opened on both sides of the upper surface of the cover plate 102. When the cover plate 102 covers the upper surface of the container 101, the hole on the upper surface of the cover plate 102 is concentric with the connecting hole opened on the connecting block 101b-1, and a fixing bolt 102c is inserted into the hole on the upper surface of the cover plate 102. The fixing bolt 102c passes through the hole on the upper surface of the cover plate 102 and the connecting hole on the connecting block 101b-1. The fixing bolt 102c is equipped with a fastening nut 102c-1 for fastening so that the cover plate 102 and the container 101 are connected to form a whole.

[0029] exist Figure 2 and Figure 3 In order to prevent the connection seam between the cover plate 102 and the container body 101 from causing material leakage during casting, an embedding groove 101a is provided on the upper surface of the container body 101, and the embedding groove 101a is provided in the middle of the wall thickness. A sealing strip 102a is provided on the inner surface of the cover plate 102, and the direction of the sealing strip 102a is arranged according to the periphery of the upper surface of the container body 101, so that after the cover plate 102 and the container body 101 are connected, the sealing strip 102a is embedded in the embedding groove 101a to form a sealing structure.

[0030] See also Figure 4-5According to the above-mentioned mold 100, the present application provides a teaching model of orthopedic vertebral body shaping technology, which is fixed in the mold 100 and formed by injection molding. The orthopedic model includes a spinal model 200. The spinal model 200 is composed of multiple vertebrae 201 connected end to end. Fixed blocks 200a are connected to the head and tail ends of the spinal model 200, and the fixed blocks 200a are made of soft material. In order to facilitate the fixation of the spinal model 200 in the mold 100, so that the spinal model 200 can be completely wrapped when the foaming agent is injected into the mold 100, the soft material of the fixed block 200a in the present application is specifically one of rubber or silicone to facilitate the passage of the steel needle.

[0031] exist Figure 5 In the figure, the lower surface of the vertebral body 201 is symmetrically connected with the transverse process 202, the lower surfaces of a pair of transverse processes 202 are commonly connected with the spinous process 204, a vertebral foramen 206 is formed between the transverse process 202 and the spinous process 204, and the front surface of the transverse process 202 is also integrally connected with the articular process 203 and the mastoid process 205. The above structure is the structure of the existing spinal bones. In this application, it is mainly combined with a foaming agent in the mold 100 to form a teaching model, so as to make the simulation higher.

[0032] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A mold making tool for orthopedic vertebral body shaping technology, comprising a mold (100), wherein the mold (100) is composed of a container (101) and a cover plate (102), wherein the cover plate (102) is fixed on the upper surface of the container (101) to form an injection molding cavity, and a symmetrical pinhole (102b) is centrally opened on the upper surface of the cover plate (102). Its characteristics are: The inner cavity contour of the housing (101) is opened according to the curvature of the human back surface. When the cover plate (102) is fixed on the upper surface of the housing (101), the orthopedic vertebra is fitted to the inner surface of the cover plate (102) and a steel needle is inserted into the orthopedic vertebra through the pin insertion hole (102b) for fixation. The casting liquid is poured into the mold (100) and cooled to form an orthopedic vertebra teaching model.

2. The mold making tool for orthopedic vertebral body shaping technology according to claim 1, characterized in that: Support bars (101b) are integrally connected to the edges of both sides of the upper surface of the container (101), the spacing between the support bars (101b) on both sides is equal to the length of the cover plate (102), and a pair of connecting blocks (101b-1) are connected to the outside of the support bars (101b), and connecting holes are provided on the connecting blocks (101b-1).

3. The mold making tool for orthopedic vertebral body shaping technology according to claim 2, characterized in that: An embedding groove (101a) is provided on the upper surface of the containing body (101), and the embedding groove (101a) is provided at the center of the wall thickness.

4. The mold making tool for orthopedic vertebral body shaping technology according to any one of claims 1 to 3, characterized in that: Holes are provided on both sides of the upper surface of the cover plate (102). When the cover plate (102) covers the upper surface of the container (101), the holes on the upper surface of the cover plate (102) are concentric with the connection holes provided on the connection block (101b-1). Fixing bolts (102c) are inserted into the holes on the upper surface of the cover plate (102), and fastening nuts (102c-1) are provided on the fixing bolts (102c).

5. The mold making tool for orthopedic vertebral body shaping technology according to claim 4, characterized in that: A sealing strip (102a) is provided on the inner surface of the cover plate (102), and the direction of the sealing strip (102a) is arranged according to the periphery of the upper surface of the container (101).

6. A teaching model for orthopedic vertebral body shaping technology, fixed in the mold making tool for orthopedic vertebral body shaping technology as claimed in claim 1 and formed by injection molding, comprising a spinal model (200), wherein the spinal model (200) is formed by connecting multiple vertebrae (201) end to end. Its characteristics are: Fixing blocks (200a) are connected to both ends of the spine model (200), and the fixing blocks (200a) are made of soft material.

7. The teaching model of orthopedic vertebroplasty technology according to claim 6, characterized in that: The soft material of the fixing block (200a) is specifically one of rubber or silicone.

8. The teaching model of orthopedic vertebroplasty technology according to claim 6, characterized in that: The lower surface of the vertebral body (201) is symmetrically connected to the transverse process (202), the lower surfaces of the pair of transverse processes (202) are commonly connected to the spinous process (204), a vertebral foramen (206) is formed between the transverse process (202) and the spinous process (204), and the front surface of the transverse process (202) is also integrally connected to the zygapophysis (203) and the mastoid process (205).

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