US 6,932,842 B1Granted

Method for generating patient-specific implants

Assignee3Di LLC

InventorsPeter Litschko, Torsten Henning, Jörg Beinemann, Wolfgang Fried, Werner Linss

Life of this patent

Estimating the term…

Loading patent…

Abstract

An implant is generated which is functionally and aesthetically adapted to the patient with a greater degree of precision, irrespective of the size, form and complexity of the defect, whereby the implant can be produced and operatively inserted into the patient over a short time period and in a simple manner. A virtual three-dimensional model of the patient which is formed from existing recorded (two-dimensional) image data of the patient is compared with real medical reference data. The comparison which is, for example, carried out using a data bank with test person data enables a reference model object which is most suited to the patient or closest to the patient model to be selected or formed and a virtual implant model is generated accordingly. Computer numeric control data is directly generated from the implant model which is generated virtually in the computer for program-assisted production of the implant.

Claims10

Dependent claims

Method for manufacturing a patient-specific implant, comprising:

obtaining medical two-dimensional image data of a defect area in a patient requiring an implant and an environment thereof for a patient by a method selected from the group consisting of computer tomography (CT) and nuclear magnetic resonance (NMR) tomography;
using a mathematical image processing algorithm to form a surface using the two-dimensional image data;
performing a segmentation to detect bones and hard tissue ranges;
generating a virtual three-dimensional model from the image data of at least the defect area in the patient requiring an implant and the environment thereof;
comparing the virtual three-dimensional model to real medical reference data;
selecting from the real medical reference data a set of said reference data best suited for the patient and forming a three-dimensional reference model object therefrom, the step of selecting the set of said reference data best suited for the patient and forming a reference model object therefrom comprising:
first selecting a plurality of sets of the reference data and forming a corresponding plurality of three-dimensional reference model objects therefrom most resembling the patient considering mathematical, functional, medical and aesthetic parameters;
and
then selecting one of said plurality of three-dimensional reference model objects best suited for the patient;
generating a virtual implant model from said selected one of said plurality of three-dimensional reference model objects by superimposing said selected one of said plurality of three-dimensional reference model objects with the virtual three-dimensional model;
and
manufacturing the implant by computer numeric control based on data from the virtual implant model.

9 more elements

Method for manufacturing a patient-specific implant, comprising:

obtaining medical two-dimensional image data of a defect area in a patient requiring an implant and an environment thereof for a patient by a method selected from the group consisting of computer tomography (CT) and nuclear magnetic resonance (NMR) tomography;
using a mathematical image processing algorithm to form a surface using the two-dimensional image data;
performing a segmentation to detect bones and hard tissue ranges;
generating a virtual three-dimensional model from the image data of at least the defect area in the patient requiring an implant and the environment thereof;
comparing the virtual three-dimensional model to real medical reference data;
selecting from the real medical reference data a set of said reference data best suited for the patient and forming a three-dimensional reference model object therefrom, the step of selecting the set of said reference data best suited for the patient and forming a reference model object therefrom comprising:
first selecting a plurality of three-dimensional reference model objects similar to the virtual three-dimensional model considering mathematical, functional, medical and aesthetic parameters;
and
then selecting one of said plurality of three-dimensional reference model objects best suited for the patient;
generating a virtual implant model from said selected one of said plurality of three-dimensional reference model objects by superimposing said selected one of said plurality of three-dimensional reference model objects with the virtual three-dimensional model;
and
manufacturing the implant by computer numeric control based on data from the virtual implant model.

9 more elements

Dependencies are inferred from the claim text.