초록 ▼

A method of making a custom, bioimplantable article, such as a joint prosthesis component, is provided using computer aided design, rapid prototyping, and investment casting techniques. The method includes the creation of a data file, using computer aided design (CAD) techniques, that defines a nega

A method of making a custom, bioimplantable article, such as a joint prosthesis component, is provided using computer aided design, rapid prototyping, and investment casting techniques. The method includes the creation of a data file, using computer aided design (CAD) techniques, that defines a negative or a shell of a portion of a bioimplantable article that is custom configured for a specific arthroplasty patient. The data file for the shell of the custom portion of the bioimplantable article is accessed by a rapid prototyping machine, such as a three-dimensional printer, to create a mold that corresponds to the shell. The mold, generally a heat-resistant ceramic, is positioned relative to an existing, non-custom representation of a bioimplantable article to define a hybrid component. A heat-resistant shell is formed around the hybrid component and the non-custom representation of a bioimplantable article is removed from the shell using heat. Molten metal is introduced into the ceramic shell and allowed to harden. The ceramic shell is removed and the resultant custom, bioimplantable article is subjected to standard surface finishing procedures as required.

대표청구항 ▼

[ What is claimed is:] [1.] A method of making a custom, bioimplantable article comprising the steps of:creating a data file that defines a three-dimensional shape of at least a portion of the custom, bioimplantable article;providing the data file to a rapid prototyping machine;fabricating a mold re

[ What is claimed is:] [1.] A method of making a custom, bioimplantable article comprising the steps of:creating a data file that defines a three-dimensional shape of at least a portion of the custom, bioimplantable article;providing the data file to a rapid prototyping machine;fabricating a mold representative of at least a portion of the custom, bioimplantable article with the rapid prototyping machine as defined by the data file;positioning the mold relative to an existing, non-custom representation of a bioimplantable article to define a hybrid component;creating a ceramic shell around the hybrid component;removing the existing, non-custom representation of a bioimplantable article from the ceramic shell;introducing molten metal into the ceramic shell;allowing the molten metal to harden; andremoving the ceramic shell from the hardened metal.