A fixation device for alloyed bionic bone

Abstract

The utility model discloses a kind of fixing devices for alloy bionic bone, it is related to orthopedic medical instrument technical field, and the utility model includes rack, the upper portion side of the rack is equipped with 3D printing equipment to the alloy bionic bone is carried out 3D printing by bolt mounting, the upper portion of rack is equipped with limiting mechanism, fixed component includes operation platform fixedly installed in the middle part of rack, when the lifting plate of the present application is driven by cylinder and moves down, the two top end limit frame fixed on it drop, under the sliding fit of execution groove and execution block on rack, make that downward movement is converted into the inward turning movement of top end limit frame, to drive top end limit block to be compacted in the top edge of base plate, lifting plate also provides limit adjustment for lateral limit frame to drop, so that by a cylinder synchronous triggering top end and lateral compacting action, the stability of base plate when bearing 3D printing equipment operation is enhanced, displacement and vibration are effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of orthopedic medical device technology, specifically to a fixation device for alloy bionic bone. Background Technology

[0002] Currently, the mainstream technology for alloy bionic bone is 3D printing, which can accurately reproduce the complex microstructure of bionic bone. It uses a high-energy laser beam to melt alloy powder layer by layer and stack it according to the cross-sectional shape of the digital model. It can achieve controllable adjustment of porosity from 10% to 80% to match the porosity characteristics of bone tissue in different parts (such as high porosity in cancellous bone and low porosity in cortical bone).

[0003] Referring to the patent document: Patent Publication No. CN107536637A, Patent Publication Date 2018-01-05, a bionic fixation device for treating calcaneal fractures is disclosed, including a base plate. Uprights are fixed to the anterior and posterior sides of the upper surface of the base plate, and a fixing strap is installed between the two uprights. A guide rail is fixed to the left side of the upper surface of the base plate. This bionic fixation device for treating calcaneal fractures has a simple structure. The base plate and fixing strap work together to fix the ankle position, preventing ankle rotation. The height of the fixing strap can be adjusted by a screw, and the tightness of the fixing strap can be adjusted by a first adjusting stud. Adjustment and installation are convenient. The arch plate supports the arch of the foot, preventing the calcaneus from contacting the base plate and arch plate, avoiding delayed recovery caused by abnormal stress on the calcaneus. The calcaneus is fixed by two fixing plates, and the fractured part of the calcaneus is fixed by hollow bone nails passing through screw holes, effectively ensuring the development and healing of the calcaneus. Disassembly is convenient, alleviating patient pain.

[0004] Based on the search of patent numbers and the shortcomings of existing technologies, the following was found:

[0005] Currently, when 3D printing is used to fabricate alloy bionic bones, the bones are usually printed directly onto a substrate. Traditionally, the substrate is fixed with bolts or dovetail clips. While bolts provide good fixation, they are cumbersome to replace. Dovetail clips offer poor clamping and require a large number of clips, resulting in low loading and unloading efficiency and hindering the need for rapid substrate replacement to meet the demands of continuous production.

[0006] Therefore, this utility model provides a fixation device for alloy bionic bone. Utility Model Content

[0007] To address the problems of cumbersome bolt fixing and poor clamping effect in traditional substrate fixing methods for alloy bionic bone 3D printing, the purpose of this invention is to provide a fixing device for alloy bionic bone.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a fixing device for alloy bionic bones, comprising a frame, wherein a 3D printing device for 3D printing alloy bionic bones is bolted to one side of the upper part of the frame, and a limiting mechanism is provided on the upper part of the frame for fixing the substrate for 3D printing the alloy bionic bone. The limiting mechanism includes:

[0009] The fixed assembly includes an operating table fixedly installed in the middle of the frame. A base plate is provided at the top of the operating table. A lifting plate is provided in the middle of the frame. A drive assembly is provided at the bottom of the lifting plate. Two symmetrically distributed top limit frames are rotatably installed on one side of the top of the lifting plate. A top limit block is fixedly installed on the upper part of each of the two top limit frames. Two symmetrically distributed lateral limit frames are rotatably installed on one side of the upper part of the frame. A contact block is fixedly installed on one side of the lower part of each of the two lateral limit frames. A lateral limit block is fixedly installed on the upper part of each of the two lateral limit frames. The lateral limit blocks and the top limit blocks are in contact with the side and top of the base plate, respectively.

[0010] The reset assembly has a lateral limiting frame on one side for limiting the substrate.

[0011] Preferably, the reset assembly includes return springs fixedly installed on one side of the lower part of the two lateral limit frames, and the top ends of the two return springs are fixedly installed on the bottom end of the operating table.

[0012] Preferably, the drive assembly includes a cylinder fixedly installed at the middle of the top of the frame, and the bottom middle of the lifting plate is fixedly installed at the drive end of the cylinder.

[0013] Preferably, four evenly distributed limiting rods are fixedly installed in the middle of the frame, and all four limiting rods slide through the middle of the lifting plate.

[0014] Preferably, an L-shaped positioning frame is fixedly installed on one side of the top of the operating table, and the two right-angled sides of the base plate are in contact with the two sides of the positioning frame respectively.

[0015] Preferably, each of the two top limiting frames has an execution slot in the middle, and two symmetrically distributed execution blocks are fixedly installed on the upper part of the frame, with both execution blocks slidably locked in the middle of the execution slot.

[0016] Beneficial effects

[0017] This invention provides a fixation device for alloy bionic bone. Compared with the prior art, it has the following advantages:

[0018] 1. When the cylinder drives the lifting plate to move downward, the two top limiting frames fixed on it also descend. With the sliding cooperation between the execution slot and the execution block on the frame, the downward movement is converted into the inward flipping movement of the top limiting frame, thereby driving the top limiting block to press against the top edge of the substrate. At the same time, the descent of the lifting plate also provides limit adjustment for the lateral limiting frame, so that the pressing action of the top and side is triggered simultaneously by a cylinder, which firmly constrains the substrate within the positioning frame of the operating table, forming a clamping force applied from the top and side at the same time. This enhances the stability of the substrate when subjected to the operation of the 3D printing equipment and effectively prevents displacement and vibration.

[0019] 2. When the lifting plate moves downward under the drive of the cylinder, the constraint on the contact block of the lateral limiting frame is released. At this time, the return spring, which is in a compressed or stored state, releases its elastic force and pushes the L-shaped lateral limiting frame to rotate around its hinge point, so that the lateral limiting block at its upper end fits tightly against the side of the substrate, thus completing the lateral limiting. When it is necessary to release the limiting, the lifting plate moves upward and pushes the contact block, forcing the lateral limiting frame to overcome the force of the return spring and flip in the opposite direction, thereby releasing the substrate. During this process, the return spring is recompressed, ensuring that the lateral limiting can be automatically, timely and powerfully executed in each fixing action. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the limiting mechanism of this utility model.

[0022] Figure 3 This is a schematic diagram of the lifting plate structure of this utility model.

[0023] Figure 4 This is a schematic diagram of the fixing component structure of this utility model.

[0024] In the diagram: 1. Frame; 11. 3D printing equipment; 2. Limiting mechanism; 21. Fixing component; 211. Cylinder; 212. Lifting plate; 2121. Limiting rod; 213. Operating table; 214. Base plate; 215. Positioning frame; 216. Top limiting frame; 2161. Execution slot; 2162. Execution block; 2163. Top limiting block; 217. Lateral limiting frame; 2171. Contact block; 2172. Lateral limiting block; 22. Reset component; 221. Return spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 This utility model provides a technical solution: a fixing device for alloy bionic bone, including a frame 1, a 3D printing device 11 for 3D printing alloy bionic bone is bolted to one side of the upper part of the frame 1, and a limiting mechanism 2 is provided on the upper part of the frame 1 for fixing the substrate 214 for 3D printing alloy bionic bone. The limiting mechanism 2 includes:

[0027] The fixing assembly 21 includes an operating table 213 fixedly installed in the middle of the frame 1. A base plate 214 is provided at the top of the operating table 213, which is used to support the 3D-printed alloy bionic bone. A lifting plate 212 is provided in the middle of the frame 1. A driving assembly for driving its up and down movement is provided at the bottom of the lifting plate 212. Two symmetrically distributed top limiting frames 216 are rotatably mounted on one side of the top of the lifting plate 212. The top limiting frames 216 are generally in the form of a bent rod structure. Top limiting blocks 2163 are fixedly installed on the upper part of each of the two top limiting frames 216. Two symmetrically distributed lateral limiting frames 217 are rotatably mounted on one side of the upper part of the frame 1. 17 has an L-shaped structure, and the inflection point of the L-shaped structure is hinged to the frame 1. A contact block 2171 is fixedly installed on the lower side of each of the two lateral limiting frames 217, and a lateral limiting block 2172 is fixedly installed on the upper part of each of the two lateral limiting frames 217. Anti-slip and shock-absorbing pads are provided at the ends of the top limiting block 2163, the contact block 2171 and the lateral limiting block 2172, which can reduce the hard contact with the substrate 214, thereby reducing the wear of the substrate 214, while increasing the friction limiting force with the substrate 214 to ensure the stability of the substrate 214. The lateral limiting block 2172 and the top limiting block 2163 respectively contact the side and top side of the substrate 214.

[0028] The reset assembly 22 has one side of the lateral limiting frame 217 for limiting the substrate 214.

[0029] The reset assembly 22 includes a return spring 221 fixedly installed on one side of the lower part of the two lateral limit frames 217. The top ends of the two return springs 221 are fixedly installed on the bottom end of the operating table 213. When the lifting plate 212 descends, the return spring 221 can push the L-shaped lateral limit frame 217 to flip, so that the upper lateral limit block 2172 contacts the side of the base plate 214, thereby limiting it.

[0030] The drive assembly includes a cylinder 211 fixedly installed at the top center of the frame 1, and a lifting plate 212 fixedly installed at the bottom center of the cylinder 211. The cylinder 211 is an SMC standard cylinder model JMDBB32-50-M9BW, which can drive the lifting plate 212 to move up and down under the drive of the cylinder 211.

[0031] Four evenly distributed limiting rods 2121 are fixedly installed in the middle of the frame 1. All four limiting rods 2121 slide through the middle of the lifting plate 212, and the limiting rods 2121 are used to guide the up and down movement of the lifting plate 212.

[0032] An L-shaped positioning frame 215 is fixedly installed on one side of the top of the operating table 213. The two right-angled sides of the substrate 214 are in contact with the two sides of the positioning frame 215 respectively. When installing the substrate 214, the two right-angled sides of the substrate 214 placed at the top of the operating table 213 are aligned with the two right-angled inner walls of the positioning frame 215 to achieve positioning.

[0033] Both top limiting frames 216 have an execution groove 2161 in the middle. The groove shape of the execution groove 2161 is the same as the bending shape of the top limiting frame 216, and it is located at the inflection point. Two symmetrically distributed execution blocks 2162 are fixedly installed on the upper part of the frame 1. Both execution blocks 2162 are slidably locked in the middle of the execution groove 2161. When the cylinder 211 drives the lifting plate 212 to move upward, the top limiting frame 216 moves upward, so that the execution blocks 2162 are in the middle of the execution groove 2161. The slide is 61. Since the bending shape of the execution groove 2161 and the top limit frame 216 is the same, the top limit frame 216 flips and contacts the top limit of the substrate 214. When the lifting plate 212 rises, it can push the contact block 2171 to move upward, causing the lateral limit frame 217 to flip, thereby simultaneously releasing the lateral limit operation on the substrate 214. When the lifting plate 212 is driven to move downward, the top limit frame 216 can flip in the opposite direction and fall to press and limit the top of the substrate 214.

[0034] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0035] During operation, when it is necessary to fix the substrate 214, the cylinder 211 is activated, driving the lifting plate 212 to move downward and causing the two top limit frames 216 to move downward. Since each top limit frame 216 has an execution groove 2161 in the middle, and the shape of the execution groove 2161 is the same as the bending shape of the top limit frame 216, the execution block 2162 fixed on the frame 1 slides in the execution groove 2161, forcing the top limit frame 216 to flip, so that the top limit block 2163 on the top limit frame 216 rotates and presses against the top side of the substrate 214, realizing the pressing and limiting of the top.

[0036] Simultaneously, when the lifting plate 212 moves downward, the return spring 221 is released. The return spring 221 pushes the two lateral limiting frames 217 to flip around their hinge points. The lateral limiting frames 217 have an L-shaped structure. When flipped, the upper lateral limiting block 2172 moves towards the side of the substrate 214 and contacts the side of the substrate 214 to fix it laterally, ensuring that the substrate 214 is stably fixed on the operating table 213. In addition, the substrate 214 has been initially positioned by the positioning frame 215 on the operating table 213 during installation. The two right-angled sides contact the inner wall of the positioning frame 215 to ensure that the substrate 214 is accurately positioned. This device applies pressure from the top and sides at the same time to form a three-dimensional fixation, preventing the alloy bionic bone from moving during the printing process on the substrate 214.

[0037] When it is necessary to release the substrate 214 from the fixation, the cylinder 211 reverses its action, driving the lifting plate 212 to move upward and causing the top limit frame 216 to rise, so that the actuator block 2162 slides in the actuator groove 2161. Due to the bent shape of the actuator groove 2161, the top limit frame 216 flips in the opposite direction, causing the top limit block 2163 to disengage from the top of the substrate 214, releasing the top clamping. At the same time, when the lifting plate 212 moves upward, its top pushes the contact block 2171 at the lower part of the lateral limit frame 217 to move upward, forcing the lateral limit frame 217 to flip in the opposite direction around the hinge point, so that the lateral limit block 2172 leaves the side of the substrate 214. The return spring 221 is compressed in this process, preparing for the next fixation.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixation device for alloy bionic bone, comprising a frame (1), characterized in that: A 3D printing device (11) for 3D printing alloy bionic bones is bolted to one side of the upper part of the frame (1). A limiting mechanism (2) is provided on the upper part of the frame (1) for fixing the substrate (214) for 3D printing alloy bionic bones. The limiting mechanism (2) includes: The fixing component (21) includes an operating table (213) fixedly installed in the middle of the frame (1). A base plate (214) is provided at the top of the operating table (213). A lifting plate (212) is provided in the middle of the frame (1). A driving component is provided at the bottom of the lifting plate (212). Two symmetrically distributed top limit frames (216) are rotatably installed on one side of the top of the lifting plate (212). Top limit blocks (2163) are fixedly installed on the upper part of the two top limit frames (216). Two symmetrically distributed side limit frames (217) are rotatably installed on one side of the upper part of the frame (1). Contact blocks (2171) are fixedly installed on one side of the lower part of the two side limit frames (217). Side limit blocks (2172) and top limit blocks (2163) are respectively in contact with the side and top of the base plate (214). The reset assembly (22) has one side of the lateral limiting frame (217) for limiting the substrate (214).

2. The fixation device for alloy bionic bone according to claim 1, characterized in that: The reset assembly (22) includes a return spring (221) fixedly installed on one side of the lower part of two lateral limit frames (217), and the top of the two return springs (221) are fixedly installed on the bottom of the operating table (213).

3. The fixation device for alloy bionic bone according to claim 1, characterized in that: The drive assembly includes a cylinder (211) fixedly installed at the top center of the frame (1), and a lifting plate (212) fixedly installed at the bottom center of the cylinder (211).

4. The fixation device for alloy bionic bone according to claim 1, characterized in that: Four evenly distributed limit rods (2121) are fixedly installed in the middle of the frame (1), and the four limit rods (2121) slide through the middle of the lifting plate (212).

5. A fixation device for alloy bionic bone according to claim 1, characterized in that: A positioning frame (215) with an L-shaped structure is fixedly installed on one side of the top of the operating table (213), and the two right-angled sides of the base plate (214) are in contact with the two sides of the positioning frame (215).

6. A fixation device for alloy bionic bone according to claim 1, characterized in that: The two top limit frames (216) are provided with execution slots (2161) in the middle. Two symmetrically distributed execution blocks (2162) are fixedly installed on the upper part of the frame (1). The two execution blocks (2162) are slidably locked in the middle of the execution slots (2161).

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