A method and device for manufacturing artificial bone based on ultrasonic processing

Abstract

The invention mainly discloses an artificial bone manufacturing method based on ultrasonic machining. By uniformly heating a to-be-machined material, an acoustic soliton is generated in metal of a machined alloy and focused on a machined position of the metal, conversion from a solid state to a liquid state is performed on the focused position, thereby achieving the separation of liquid waste froma metal wall, an ultrasonic phased array composed of a plurality of ultrasonic transducers generates continuously varied spatial boosting, the exfoliated liquid waste is discharged from a cavity of amachined part by using the continuously varied spatial boosting, and the metal is machined into intercommunicated loosened porous material. The artificial bone manufacturing method based on ultrasonic machining has the advantages that more freedom in the design of microstructures in the system is given, the limitation from materials is small, metallic and non-metallic materials can be machined, and an artificial bone with high porosity, uniform pore size and intercommunicated pores can be prepared, thereby increasing the storage rate of growth factors and drugs in the artificial bone and facilitating the regrowth of bone cells in the pores.

Description

technical field [0001] The invention belongs to the field of metal material processing, and in particular relates to an artificial bone manufacturing method and device based on ultrasonic processing. Background technique [0002] Biomedical materials, also known as biomaterials, are materials for diagnosing, treating, and replacing damaged tissues and organs to perform their functions. The manufacture of artificial bone has always been a hot topic of medical biomaterials, because it is used as a human hard tissue replacement or repair material, it needs to have good biocompatibility and a good porous structure for storing biological factors and medical Drugs, and facilitate the regeneration of bone tissue in the material. [0003] At present, there are many ways to prepare artificial bone materials, including: (1) powder metallurgy method: the process is simple, the manufacturing cost is low, and the pore parameters such as the pore structure, porosity, and pore size of the...

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Problems solved by technology

[0003] At present, there are many ways to prepare artificial bone materials, including: (1) powder metallurgy method: the process is simple, the manufacturing cost is low, and the pore parameters such as the pore structure, porosity, and pore size of the porous material can be well controlled, but the prepared porous titanium The porosity is too low, the connectivity is poor and the voids are non-spherical; (2) fiber metallurgy: high-quality porous metal fiber materials can be produced, but the product size is limited, and the pores of porous titanium materials are irregular; (3) self-propagating high-temperature synthesis method : The reaction speed is fast, the temperature is high, and the porous structure can be produced, but the porosity is not high and it has a long void structure; (4) Rapid prototyping technology: The current rapid prototyping methods for metal components mainly include laser sintering and arc sintering. The pore structure, size, porosity and other parameters of the generated artificial bone are precisely controlled, but the processing time is long, and it is easy to bond difficult-to-handle metal particles or bumps in the internal void

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