CN109865756B - Method for forming metal fixing bone plate by local increment flexible forming and bending forming tool - Google Patents
Method for forming metal fixing bone plate by local increment flexible forming and bending forming tool Download PDFInfo
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 114
- 238000005452 bending Methods 0.000 title claims abstract description 62
- 239000002184 metal Substances 0.000 title claims abstract description 16
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- 238000002591 computed tomography Methods 0.000 claims description 3
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- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 208000010392 Bone Fractures Diseases 0.000 description 23
- 206010017076 Fracture Diseases 0.000 description 23
- 210000003423 ankle Anatomy 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 210000003625 skull Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
一种局部增量柔性成形金属固定骨板的方法及弯扭成形工具，成形方法是采用三维模型重构技术，获取宠物骨折受伤处骨骼三维CAD数字模型，根据外轮廓面智能控制弯扭成形工具完成固定骨板局部增量成形，实现金属固定骨板的自动一体化柔性成形；弯扭成形工具包括固定体，固定体左右对称连接有左成形体和右成形体，左成形体和固定体之间、右成形体和固定体之间均通过球状连接块连接；左成形体、右成形体上开有能够穿过骨板的缺口；本发明比起手动调整更加贴合骨折受伤处骨骼，用弯扭成形工具实现两个手动工具的功能，提高效率。
A method for locally incremental flexible forming of a metal fixing bone plate and a bending and twisting forming tool. The forming method is to use a three-dimensional model reconstruction technology to obtain a three-dimensional CAD digital model of a bone of a pet fracture and injury, and intelligently control the bending and torsion forming tool according to the outer contour surface. The local incremental forming of the fixed bone plate is completed, and the automatic integrated flexible forming of the metal fixed bone plate is realized; The left and right forming bodies are connected by spherical connecting blocks; the left forming body and the right forming body are provided with gaps that can pass through the bone plate; The bending and twisting tool realizes the function of two hand tools and improves efficiency.
Description
Technical Field
The invention belongs to the technical field of advanced material forming, and particularly relates to a method for flexibly forming a metal fixing bone plate by local increment and a bending and twisting forming tool.
Background
The scale of feeding small pets is gradually increased in order to relieve the pressure of life and achieve spiritual consortium, thereby promoting the growth of the pet medical market. Fracture is a common symptom in pet medical treatment, generally, the fracture needs to be treated by fixing by using a PRCL (Point-contact Reconstruction compression Locking) Locking bone plate, the bone plate is attached to the bone of the fracture affected part after in-plane bending, bending and twisting, and then a screw is implanted to make the bone attached to the bone. The surface of the injured bone is a spatial curved surface and has a complex profile, so that bone plates with different complex profiles are required to fix different injured bones. In the traditional mode, three types of deformation of in-plane bending, bending and torsion are required to be realized by manual adjustment to fit the injured skeleton, on one hand, the manual adjustment is difficult to master the forming precision, the bone plate cannot be completely fit with the skeleton, on the other hand, the three types of deformation require at least two types of tools (each type of tool needs two tools to work simultaneously) for adjustment, and the efficiency is low.
The flexible forming technologies such as single-point progressive forming, multi-point forming and the like based on the advanced numerical control technology are already applied to disposable and personalized human body medical customization such as ankle orthotics and skull repair (bone plates used by the ankle orthotics are non-porous light plates, bone plates used by the skull repair are small-hole mesh plates), but the flexible forming technologies are not applied to pet fracture medical treatment, mainly because the bone plates used by the pet fracture medical treatment are thin strips and are similar to one-dimensional structures, the meshes are large (used for implanting screws), and the flexible forming technologies such as the single-point progressive forming, the multi-point forming and the like are difficult to be directly applied to the pet fracture medical treatment at present.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a method for flexibly forming a metal fixing bone plate in a local increment manner and a bending and twisting forming tool, which realize automatic integrated forming of the metal fixing bone plate.
In order to achieve the purpose, the invention adopts the technical scheme that:
a bending and twisting forming tool for forming a local increment flexible metal fixing bone plate comprises a fixing body 4, wherein the fixing body 4 is bilaterally and symmetrically connected with a left forming body 1 and a right forming body 2, and the left forming body 1 and the fixing body 4, and the right forming body 2 and the fixing body 4 are connected through spherical connecting blocks 3; the left forming body 1 and the right forming body 2 are provided with notches which can pass through bone plates.
The upper part of the left side of the fixed body 4 is provided with an upper ball socket, the left forming body 1 is correspondingly provided with the upper ball socket, the upper side of the left forming body 1 is connected with the upper side of the fixed body 4 through a first spherical connecting block 31, and the first spherical connecting block 31 is positioned in the upper ball socket of the left side of the fixed body 4 and the upper ball socket of the left side of the left forming body 1; the lower part of the left side of the fixed body 4 is provided with a lower ball socket, the left forming body 1 is correspondingly provided with the lower ball socket, the lower side of the left forming body 1 is connected with the lower side of the fixed body 4 through a third spherical connecting block 33, and the third spherical connecting block 33 is positioned in the lower ball socket of the left side of the fixed body 4 and the lower ball socket of the left side of the left forming body 1, so that the left forming body 1 can be turned to any direction relative to the fixed body 4;
the right forming body 2 and the fixed body 4 are connected through a second spherical connecting block 32 and a fourth spherical connecting block 34, and the right forming body 2 can be turned to any direction relative to the fixed body 4 in the same way as the left forming body 1 and the fixed body 4 are connected.
A method of forming a partially incremental formed metal fixation plate, comprising the steps of:
3.1) determining the forming types of the region, namely in-plane bending, bending and twisting according to the outer contour surface of the bone at the fracture part corresponding to the region 1;
3.2) controlling the left forming body 1 and the right forming body 2 of the bending and twisting forming tool to rotate around an axis vertical to the plane of the bone plate 5 if the bone plate 5 is required to be bent in the plane at the area 1 according to the condition that the bone plate 5 is jointed with the outer contour surface; controlling only the left molded body 1 or only the right molded body 2, or controlling both the left molded body 1 and the right molded body 2 to rotate, depending on the undulation of the outer contour surface, and not performing the control if not necessary;
3.3) if the bone plate 5 is required to be bent at the area 1 according to the condition that the bone plate 5 is jointed with the outer contour surface, controlling the left forming body 1 and the right forming body 2 of the bending and twisting forming tool to rotate to be parallel or form a certain angle according to the condition that the outer contour surface is fluctuated, then controlling the left forming body 1 and the right forming body 2 to rotate around the axis which is vertical to the bone plate 5 in the plane of the bone plate 5, and if not, not performing;
3.4) controlling the left forming body 1 and the right forming body 2 of the bending and twisting forming tool to rotate around the axis of the bone plate 5 in the plane of the bone plate 5 and parallel to the bone plate 5 if the bone plate 5 needs to be twisted at the area 1 according to the condition that the bone plate 5 is jointed with the outer contour surface; controlling only the left molded body 1 or only the right molded body 2, or controlling both the left molded body 1 and the right molded body 2 to rotate, depending on the undulation of the outer contour surface, and not performing the control if not necessary;
step 4, moving the bending and twisting forming tool to be arranged at the area 2, and intelligently controlling the bending and twisting forming tool to adjust the area 2 of the bone plate 5 so as to enable the bending and twisting forming tool to be attached to the outer contour surface of the bone at the corresponding fracture part;
and 6, withdrawing the bending and twisting forming tool from the region N to finish the automatic integrated flexible forming of the metal fixing bone plate.
The invention has the beneficial effects that:
the method adopts a three-dimensional model reconstruction technology to obtain a three-dimensional CAD digital model of the bone at the fracture injury of the pet, intelligently controls the bending forming tool according to the outer contour surface to complete local incremental forming of the fixing bone plate, realizes automatic integrated flexible forming of the metal fixing bone plate, is more fit with the bone at the fracture injury than manual adjustment, realizes the functions of two manual tools by the bending forming tool, and improves the efficiency.
Drawings
FIG. 1 is a schematic view of a twist forming tool of the present invention.
FIG. 2 is a flow chart of the forming method of the present invention.
FIG. 3 is a schematic diagram of a three-dimensional CAD digital model of a bone at a fracture of a pet.
Fig. 4 is a schematic view of an unformed bone plate.
Fig. 5 is a schematic view of the rotation of only the left forming body as the tool is used to perform an in-plane bending of the bone plate.
FIG. 6 is a schematic view of the rotation of both the left and right forming bodies as the tool bends the bone plate in-plane.
Fig. 7 is a schematic view of a bend forming tool bending a bone plate.
Fig. 8 is a schematic view of only the left forming body rotating as the bone plate is twisted by the kink forming tool.
FIG. 9 is a schematic view of the rotation of both the left and right forming bodies as the tool twists the bone plate.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Referring to fig. 1, the bending and twisting forming tool for forming the local increment flexible metal fixing bone plate comprises a fixing body 4, wherein the fixing body 4 is connected with a left forming body 1 and a right forming body 2 in a bilateral symmetry manner, and the left forming body 1 and the fixing body 4, and the right forming body 2 and the fixing body 4 are connected through spherical connecting blocks 3; the left forming body 1 and the right forming body 2 are provided with notches which can pass through the bone plate, the fixing body 4 is kept still, and the left forming body 1 and the right forming body 2 are respectively controlled to rotate in any direction to achieve the effect of adjusting the bone plate.
The upper part of the left side of the fixed body 4 is provided with an upper ball socket, the left forming body 1 is correspondingly provided with the upper ball socket, the upper side of the left forming body 1 is connected with the upper side of the fixed body 4 through a first spherical connecting block 31, and the first spherical connecting block 31 is positioned in the upper ball socket of the left side of the fixed body 4 and the upper ball socket of the left side of the left forming body 1; the lower part of the left side of the fixed body 4 is provided with a lower ball socket, the left forming body 1 is correspondingly provided with the lower ball socket, the lower side of the left forming body 1 is connected with the lower side of the fixed body 4 through a third spherical connecting block 33, and the third spherical connecting block 33 is positioned in the lower ball socket of the left side of the fixed body 4 and the lower ball socket of the left side of the left forming body 1, so that the left forming body 1 can be turned to any direction relative to the fixed body 4;
the right forming body 2 and the fixed body 4 are connected through a second spherical connecting block 32 and a fourth spherical connecting block 34, and the right forming body 2 can be turned to any direction relative to the fixed body 4 in the same way as the left forming body 1 and the fixed body 4 are connected.
As shown in fig. 2, a method for forming a metal plate for fixation in a local incremental manner includes the following steps:
3.1) determining the forming types of the region, namely in-plane bending, bending and twisting according to the outer contour surface of the bone at the fracture part corresponding to the region 1;
3.2) controlling the left forming body 1 and the right forming body 2 of the bending and twisting forming tool to rotate around an axis vertical to the plane of the bone plate 5 if the bone plate 5 is required to be bent in the plane at the area 1 according to the condition that the bone plate 5 is jointed with the outer contour surface; depending on the undulation of the outer contour surface, as shown in fig. 5, only the left molded body 1 or only the right molded body 2 may be controlled to rotate, or both the left molded body 1 and the right molded body 2 may be controlled to rotate, as shown in fig. 6, and if not necessary, this may not be done;
3.3) if the bone plate 5 is required to be bent at the area 1 according to the condition that the bone plate 5 is jointed with the outer contour surface, controlling the left forming body 1 and the right forming body 2 of the bending and twisting forming tool to rotate to be parallel or at a certain angle according to the condition that the outer contour surface is fluctuated, and then controlling the left forming body 1 and the right forming body 2 to rotate around the axis which is perpendicular to the bone plate 5 in the plane of the bone plate 5, wherein the forming process is as shown in figure 7, and if the forming process is not required, the forming process is not carried out;
3.4) controlling the left forming body 1 and the right forming body 2 of the bending and twisting forming tool to rotate around the axis of the bone plate 5 in the plane of the bone plate 5 and parallel to the bone plate 5 if the bone plate 5 needs to be twisted at the area 1 according to the condition that the bone plate 5 is jointed with the outer contour surface; depending on the undulation of the outer contour surface, as shown in fig. 8, only the left molded body 1 or only the right molded body 2 may be controlled to rotate, or both the left molded body 1 and the right molded body 2 may be controlled to rotate, and as shown in fig. 9, if not necessary, this may not be done;
step 4, moving the bending and twisting forming tool to be arranged at the area 2, and intelligently controlling the bending and twisting forming tool to adjust the area 2 of the bone plate 5 so as to enable the bending and twisting forming tool to be attached to the outer contour surface of the bone at the corresponding fracture part;
and 6, withdrawing the bending and twisting forming tool from the region N to finish the automatic integrated flexible forming of the metal fixing bone plate.
Claims (3)
1. A method of forming a partially incremental formed metal fixation plate, comprising the steps of:
step 1, reconstructing a three-dimensional model, performing CT scanning on a bone of a fracture part of a pet to obtain three-dimensional curved surface data, and reconstructing a three-dimensional CAD digital model of the bone of the fracture part of the pet;
step 2, dividing the bone plate (5) into N forming areas according to the corresponding relation between the length of the bone plate and the outer contour surface of the bone at the fracture part;
step 3, placing the bending forming tool in the region 1, and intelligently controlling the bending forming tool to adjust the region 1 of the bone plate (5) to ensure that the bending forming tool is attached to the outer contour surface of the bone corresponding to the fracture part, specifically:
3.1) determining the forming types of the region, namely in-plane bending, bending and twisting according to the outer contour surface of the bone at the fracture part corresponding to the region 1;
3.2) controlling the left forming body (1) and the right forming body (2) of the bending and twisting forming tool to rotate around an axis vertical to the plane of the bone plate (5) if the bone plate (5) needs to be bent in the plane at the area 1 according to the condition that the bone plate (5) is attached to the outer contour surface; controlling only the left forming body (1) or only the right forming body (2) to rotate or controlling both the left forming body (1) and the right forming body (2) to rotate according to the undulation of the outer contour surface, if not necessary, not performing;
3.3) if the bone plate (5) needs to be bent at the area 1 according to the condition that the bone plate (5) is attached to the outer contour surface, controlling the left forming body (1) and the right forming body (2) of the bending and twisting forming tool to rotate to be parallel or at a certain angle according to the undulation condition of the outer contour surface, and then controlling the left forming body (1) and the right forming body (2) to rotate around an axis which is parallel to the width direction of the bone plate (5) in the plane of the bone plate (5), and if the left forming body and the right forming body are not needed, not performing the;
3.4) controlling the left forming body (1) and the right forming body (2) of the bending and twisting forming tool to rotate around an axis which is parallel to the length direction of the bone plate (5) in the plane of the bone plate (5) if the bone plate (5) needs to be twisted at the area 1 according to the condition that the bone plate (5) is jointed with the outer contour surface; controlling only the left forming body (1) or only the right forming body (2) to rotate or controlling both the left forming body (1) and the right forming body (2) to rotate according to the undulation of the outer contour surface, if not necessary, not performing;
step 4, moving the bending and twisting forming tool to be arranged at the area 2, and intelligently controlling the bending and twisting forming tool to adjust the area 2 of the bone plate (5) so as to enable the bending and twisting forming tool to be attached to the outer contour surface of the bone at the corresponding fracture part;
step 5, moving the bending and twisting forming tool to be placed in the region N, wherein N is 3 … … N, and intelligently controlling the bending and twisting forming tool to adjust the region N of the bone plate (5) to enable the bending and twisting forming tool to be attached to the outer contour surface of the bone at the corresponding fracture position until N is N;
and 6, withdrawing the bending and twisting forming tool from the region N to finish the automatic integrated flexible forming of the metal fixing bone plate.
2. The twist forming tool used in the forming method according to claim 1, wherein: the device comprises a fixing body (4), wherein the fixing body (4) is connected with a left forming body (1) and a right forming body (2) in a bilateral symmetry manner, and the left forming body (1) is connected with the fixing body (4) and the right forming body (2) is connected with the fixing body (4) through spherical connecting blocks (3); the left forming body (1) and the right forming body (2) are provided with notches which can pass through bone plates.
3. The cranked forming tool according to claim 2, characterised in that: the upper part of the left side of the fixed body (4) is provided with an upper ball socket, the left formed body (1) is correspondingly provided with the upper ball socket, the upper side of the left formed body (1) is connected with the upper side of the fixed body (4) through a first spherical connecting block (31), and the first spherical connecting block (31) is positioned in the upper ball socket of the left side of the fixed body (4) and the upper ball socket of the left formed body (1); a lower ball socket is arranged at the lower part of the left side of the fixed body (4), a lower ball socket is correspondingly arranged on the left formed body (1), the lower side of the left formed body (1) is connected with the lower side of the fixed body (4) through a third spherical connecting block (33), and the third spherical connecting block (33) is positioned in the lower ball socket of the left side of the fixed body (4) and the lower ball socket of the left formed body (1), so that the left formed body (1) can be turned to any direction relative to the fixed body (4);
the right forming body (2) and the fixed body (4) are connected through a second spherical connecting block (32) and a fourth spherical connecting block (34), the specific mode is the same as the connection mode of the left forming body (1) and the fixed body (4), and the right forming body (2) can be turned to any direction relative to the fixed body (4).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910222309.8A CN109865756B (en) | 2019-03-22 | 2019-03-22 | Method for forming metal fixing bone plate by local increment flexible forming and bending forming tool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910222309.8A CN109865756B (en) | 2019-03-22 | 2019-03-22 | Method for forming metal fixing bone plate by local increment flexible forming and bending forming tool |
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| CN109865756B true CN109865756B (en) | 2020-03-24 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111299361A (en) * | 2019-11-21 | 2020-06-19 | 创美得医疗器械（天津）有限公司 | Device for bending bone plate in same plane |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046845A (en) * | 1989-04-30 | 1990-11-14 | 张懋 | Fracture inside fixing Z type plate and synthetism method thereof |
| CN2722844Y (en) * | 2004-06-03 | 2005-09-07 | 蒋电明 | Biological degradable screw and bone fracture plate for fixing human and aniaml internal short ossicle fracture |
| JP5462329B2 (en) * | 2012-08-08 | 2014-04-02 | 日本車輌製造株式会社 | Method of manufacturing bone member with hole for railway vehicle |
| ES2735018T3 (en) * | 2013-10-15 | 2019-12-13 | Mohamed Rashwan Mahfouz | Bone reconstruction and orthopedic implants |
| CN204294713U (en) * | 2014-12-02 | 2015-04-29 | 洛斐尔建材江苏有限公司 | A kind of high strength ceilings keel bending forming mechanism |
| US9956599B2 (en) * | 2015-09-29 | 2018-05-01 | Trimed, Inc. | System, including a bending bar and a bending cage, for bending a plate in a plane of the plate |
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