A design and fabrication method for individualized 3D printed implants

A technology of 3D printing and manufacturing method, applied in the field of medical implanted biomaterials, can solve the problems of increased implantation risk and large difference in the elastic modulus of the jaw between titanium and titanium, and achieves the effect of low cost and simple process

Inactive Publication Date: 2017-07-07
SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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Problems solved by technology

Moreover, some patients suffer from periodontal disease, osteoporosis, diabetes, tumors and other diseases, and their cancellous bone density is lower than that of normal people. Therefore, the elastic modulus of the jaw is much different from that of titanium, and the risk of implantation increases accordingly. Big

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  • A design and fabrication method for individualized 3D printed implants

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Embodiment Construction

[0022] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0023] Such as figure 1 As shown, the printed implant of this embodiment includes an integrally formed head 1 and body 2, the head 1 is provided with a groove 11 for connecting the foundation pile, the surface of the body 2 is provided with threads, and the body 2 includes a solid Body 21 and porous grid body 22 , the porous grid body 22 covers the outer surface of the solid body 21 . The porous grid body 22 is a porous grid structure. The head 1 is the gingival part, and the body 2 is the osseointegration part.

[0024] This embodiment includes the following steps:

[0025] (1) The pore diameter of the porous ...

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Abstract

The invention discloses a design and production method of an individualized 3D printing implant, which divides the aperture of the porous grid body into n1 grades on average, the porosity into n2 grades on average, and the thickness into n3 grades on average, n1 ×n2×n3 The elastic modulus corresponding to the porous grid body is divided into n4 grades, so as to correspond to n4 kinds of bone density; preoperative quantitative CT of the jaw is taken for the patient, and the three-dimensional reconstruction software and empirical formula are used to calculate Find the average bone elastic modulus E, and select the thickest porous grid body among the implants with similar elastic modulus range; 3D printing is carried out on the implant, and the head and body are integrally formed. The pore diameter, porosity and thickness of the porous network frame body of the present invention are set in stages, so that the implant can reach elastic modulus of different sizes, and is suitable for people with different bone densities.

Description

technical field [0001] The invention relates to a medical implant biomaterial, in particular to a method for designing and manufacturing an individualized 3D printing implant. Background technique [0002] Titanium and titanium alloy materials have been used as implant materials for more than 30 years. However, the elastic modulus of titanium (110GPa) is different from that of human jawbone (3-30GPa for cortical bone and 0.5-3GPa for cancellous bone). If it is too large, it will lead to stress shielding effect, resulting in bone resorption, which will lead to implant loosening and implant failure. The bone density of the jaw itself varies depending on the location. The maxilla is dominated by cancellous bone, while the cortical bone of the mandible is thicker. Therefore, the elastic modulus of the bone environment is different depending on the implant site. Moreover, some patients suffer from periodontal disease, osteoporosis, diabetes, tumors and other diseases, and their ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C8/00
Inventor 陆尔奕李慧武黄美慧卫忠
Owner SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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