Measuring method of wire diameter and pore diameter of 3D printed titanium alloy trabecular bone specimen
A technology of 3D printing and measurement method, which is applied in the direction of mechanical diameter measurement, etc., can solve the problems of not specifying whether the theoretical value of the artificial vertebral body is still the measured value, and the lack of measurement methods for the wire diameter and aperture of the bone trabecular specimen, so as to achieve easy calculation, The effect of promoting bone growth
Active Publication Date: 2021-07-27
JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD
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Problems solved by technology
The applicant did not specify whether the hole diameter and wire diameter of the artificial vertebral body in the patent are theoretical values or measured values
At present, there is no measurement method report and related standards for evaluating the wire diameter and pore diameter of trabecular bone characteristics, especially the lack of measurement methods for internal wire diameter and pore diameter of trabecular bone specimens
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[0023] First, titanium alloy trabecular bone specimens were prepared by 3D printing technology. The specimens were cubic, and the trabecular bone had a crystal structure. The size of the specimen was a multiple of the minimum unit size of the trabecular bone, which was 5×10×10.
[0024] Take a certain proportion of self-condensing water and dental tray powder, pour it into a container for mixing, and evenly spread it on the titanium alloy bone trabecular specimen after fully stirring to ensure that the filling is complete and non-porous. The room temperature is 20 degrees. dry.
[0025] The dried trabecular bone is placed on a precision milling machine for processing, and the milling machine precision is 0.01-
[0026] 0.05mm, and gradually remove the trabecular bone and polymer materials on the surface of the specimen until the trabecular bone morphology on the surface and inside of the specimen is clearly displayed.
[0027] Digital correlation technology was used to collec...
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Abstract
Measurement method of wire diameter and pore diameter of 3D titanium alloy trabecular bone specimen. The trabecular bone specimens were prepared by adopting crystal structure trabecular bone and bone trabecular structure that is conducive to cell and bone ingrowth; the shape of the specimen adopts a cubic structure, and the size adopts the multiple of the minimum unit size of bone trabecular; the bone is infused with dental tray powder The trabecular test piece, the titanium alloy trabecular bone is consolidated, and the wires of the trabecular bone are prevented from being cut off and embedded in the trabecular bone structure during mechanical processing; the surface and interior of the trabecular bone test piece are processed by precision milling machine Morphology of trabecular bone structure; using digital correlation technology to collect the surface and internal morphology of trabecular bone specimen; put forward the method of surface and internal wire diameter and aperture of trabecular bone specimen. The invention provides a basis for evaluating the printing quality of the metal 3D printer and the performance of the trabecular bone.
Description
technical field [0001] The invention relates to a method for measuring the wire diameter and aperture of a 3D printed titanium alloy trabecular bone test piece, and the technical field of design and manufacture of metal implants for medical devices. Background technique [0002] At present, there have been some reports on the design and application of 3D printing titanium alloy trabecular bone at home and abroad. Guo Zheng et al. published a 3D printing personalized customized artificial vertebral body and its preparation method. The vertebral body includes trabecular bone and Trabecular bone stiffener, 201710995804.3. The diameter of the trabecular bone vertebral body is 0.4mm-0.6mm, and the wire diameter is 0.2-0.4mm. The applicant does not specify whether the diameter of the artificial vertebral body and the diameter of the wire in the patent are theoretical or measured values. At present, there are no reports and related standards for measuring the diameter and diamete...
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IPC IPC(8): G01B5/08
CPCG01B5/08
Inventor 刘念叶金铎孟昱黄洁茹
Owner JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD