Design and manufacturing method of a customized degradable bone plate with composite structure
A composite structure and bone plate technology, applied in the field of medical appliances, can solve the problems of poor fit and low mechanical properties, and achieve the effects of avoiding infection, good mechanical properties and good fit effect.
Active Publication Date: 2021-03-16
XINJIANG UNIVERSITY
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Problems solved by technology
The bone plate is prepared by 3D printing, so as to overcome the shortcomings of the traditional degradable bone plate with low mechanical properties and poor fit
Method used
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[0043] In order to facilitate the description in the invention, the description of the relative positional relationship of each layer of the bone plate is based on the description attached to the description. figure 1 For example, the positional relationship of up, down, left, right, front, back, inside, outside, etc. is based on the attached figure 1 determined by the layout direction.
[0044] The present invention will be described in further detail below with reference to the embodiments and accompanying drawings, but the specific implementation of the present invention is not limited thereto.
[0045] as attached figure 1 And attached figure 2 Shown is a degradable bone plate with a composite structure that is custom-designed according to the patient's fracture site. The slow-release layer 4 and the reinforcing fiber 5 are composed. The shape of the contact surface of the bone plate is designed according to the shape of the outer surface of the patient's fractured bo...
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Abstract
The invention discloses a design and manufacturing method for a customized degradable bone fracture plate of a composite structure. The bone fracture plate is composed of a degradable polymer-biological ceramic composite layer, a long fiber reinforcement polymer layer and a medicine slow-release layer. A contact surface of the bone fracture plate is subjected to customized design according to thefracture part of a patient, the structure of the bone fracture plate is subjected to optimized design according to the mechanics characteristics of a mounting part, and 3D printing manufacturing is adopted. The method comprises the following steps that 1) the fracture part of the patient is scanned by using methods such as CT, and scanned data is output; 2) skeleton surface data of the mounting part of the bone fracture plate is extracted in medical image processing software, and a reconstituted skeleton surface three-dimensional model is output; 3) a three-dimensional structure of the bone fracture plate is subjected to optimized design in three-dimensional computer auxiliary design software; 4) a 3D printing technology is adopted for manufacturing the bone fracture plate; 5) the manufactured bone fracture plate is subjected to mechanics testing.
Description
technical field [0001] The invention relates to the technical field of medical appliances, in particular to a design and manufacturing method of a customized, degradable bone plate with a composite structure. Background technique [0002] At present, in the treatment of fractures, it is a common method to adopt surgical implantation of bone plate to fix the fracture end. At present, the bone plate is usually made of inert metals such as titanium alloy and stainless steel with good mechanical properties, which can provide stable and reliable temporary support for the fracture site, but the elastic modulus of the metal and the bone is very different, which will cause "stress shielding". Complications such as osteoporosis, osteolysis, and implant loosening may result. Since the linear initial shape of the mass-produced bone plate cannot guarantee an accurate fit with the shape of the patient’s bone, doctors need to manually plasticize the bone plate with experience during the ...
Claims
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IPC IPC(8): A61B17/80B33Y80/00B33Y50/00A61L31/14A61L31/16A61L31/12A61L31/10A61L31/08
CPCA61B17/80A61B2017/00526A61L31/08A61L31/082A61L31/10A61L31/146A61L31/148A61L31/16A61L2300/406A61L2300/602B33Y50/00B33Y80/00C08L67/04
Inventor 乌日开西·艾依提阿依古丽·喀斯木帕提古丽·艾合麦提
Owner XINJIANG UNIVERSITY