Additive manufacturing method of prosthesis

A technology of additive manufacturing and prosthesis, applied in the direction of bone implants, etc., can solve the problem of unequal prosthesis strength and surface finish, and achieve the effects of saving preparation time, reducing surface roughness, and improving finish

Inactive Publication Date: 2019-07-26
重庆熙科医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the technical limitations of FDM, the strength and surface finish of its prosthesis may not be able to meet the needs of patients

Method used

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  • Additive manufacturing method of prosthesis

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] Preferably, the high-precision CT scanning technology realizes the high-precision modeling of the bone affected area combined with the position design of the injection runner to obtain a high-precision digital model suitable for additive manufacturing.

[0099] Preferably, the powder sintering technology (SLS) of additive manufacturing uses spherical powder of stainless steel 316L to prepare the metal injection mold.

[0100] Preferably, the injection mold obtained by additive manufacturing is polished, and the surface roughness Ra is 0.005; the surface roughness is further reduced through the electroplating process.

[0101] Preferably, the PEEK material of VICTREX is used for injection molding to simulate artificial bones with high precision.

[0102] Preferably, the positioning function of the surgical navigation template is used to determine the cutting point and the cutting surface to obtain a high-precision and high-simulation PEEK artificial bone that can be used for tran...

Embodiment 2

[0113] Preferably, the high-precision CT scanning technology realizes the high-precision modeling of the bone affected area combined with the position design of the injection runner to obtain a high-precision digital model suitable for additive manufacturing.

[0114] Preferably, the powder sintering technology (SLS) of additive manufacturing uses spherical powder of stainless steel 316L to prepare the metal injection mold.

[0115] Preferably, the injection mold obtained by additive manufacturing is polished, and the surface roughness Ra is 0.01; through the electroplating process, the surface roughness is further reduced.

[0116] Preferably, the PEEK material of VICTREX is used for injection molding to simulate artificial bones with high precision.

[0117] Preferably, the positioning function of the surgical navigation template is used to determine the cutting point and the cutting surface to obtain a high-precision and high-simulation PEEK artificial bone that can be used for tran...

Embodiment 3

[0128] Preferably, the high-precision CT scanning technology realizes the high-precision modeling of the bone-affected part; combined with the position design of the injection runner, a high-precision digital model suitable for additive manufacturing is obtained.

[0129] Preferably, the powder sintering technology (SLS) of additive manufacturing uses spherical powder of stainless steel 316L to prepare the metal injection mold.

[0130] Preferably, the injection mold obtained by additive manufacturing is polished, and the surface roughness Ra is 0.015; the surface roughness is further reduced through the electroplating process.

[0131] Preferably, the PEEK material of VICTREX is used for injection molding to simulate artificial bones with high precision.

[0132] Preferably, the positioning function of the surgical navigation template is used to determine the cutting point and the cutting surface to obtain a high-precision and high-simulation PEEK artificial bone that can be used for ...

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Abstract

The invention discloses an additive manufacturing method of a prosthesis. The method aims to improve the performances of an artificial bone technology in the aspects of mechanical strength, high simulation performance, individuation and the like. The additive manufacturing method of the prosthesis comprises the following processes of high-simulation mold preparation, precision machining, injectionmolding and precise cutting. By adopting the additive manufacturing method of the prosthesis, according to the definite patient, high-simulation data are obtained by utilizing a CT scanning technology which is applied to a specific bone sick part and a high-simulation injection mold is designed; the high-simulation injection mold is prepared through a metal additive manufacturing technology; by utilizing a traditional process, the machining precision of the injection mold is improved; the injection molding process is utilized to complete the preparation of a high-strength PEEK material injection molding part; and an individual, high-strength and high-precision artificial bone suitable for the patient is obtained through the precise cutting process utilizing an operation navigation plate.According to the method, the defects of an existing artificial bone manufacturing technology can be obviously overcome, the individual requirements of the patients can be met, and the living quality of the patients can be improved.

Description

Technical field [0001] The invention relates to the manufacturing field and the field of medical prostheses, in particular to a method for additive manufacturing of prostheses. Background technique [0002] As we all know: With the development of modern medicine, artificial bones have played an important role in the medical field. They can partially replace human bones to treat a series of bone-related diseases such as fractures, bone defects, bone lesions, and bone necrosis, for the rehabilitation and integration of patients. Live a normal life and create possibilities. The sources of artificial bones are mainly divided into two categories, inorganic non-metal artificial bones (hydroxyapatite, engineering plastics, etc.) and metal alloy artificial bones (titanium alloys, cobalt-chromium alloys, etc.). Inorganic non-metal artificial bones have good biocompatibility, but their mechanical strength is relatively poor; the mechanical strength of metal alloy bones is high, which grea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/38B29C45/00A61F2/28
CPCA61F2/28B29C33/3842B29C45/00
Inventor 范树迁黎静谢海琼王晗唐康来
Owner 重庆熙科医疗科技有限公司
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