US 5,816,810 AGranted

Method for producing an elongate supporting part in a replacement construction, and such a supporting part manufactured using this method

AssigneeNobel Biocare AB

InventorsIzidor Antonson, Lennart Carlsson

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Abstract

An elongate supporting part in a replacement construction and a method of production thereof, the replacement construction is intended to be secured in the human body in implants with unique longitudinal courses by using at least one working model in which the longitudinal courses and connection surfaces of the implants are represented by representation members. The method comprising the steps of generating an electrical representation of the outer shape of the working model and providing this information to computer equipment. The computer equipment performs calculations in order to establish an outer shape for the supporting part and generates machining information based on this outer shape which represents the shape of the supporting part. This information is provided to a machining device which machines a blank and an electro erosion tool is created by providing electrodes in a working model at positions of the representation members. The electrodes are arranged in the same longitudinal direction as the representation members. The electro erosion tool is used to create a recess in the blank for contact members whereby the blank can be anchored on the implants. The recess and the contact members have a longitudinal axis which coincide with the axis of the implants.

Claims11

Dependent claims

A method for producing an elongate supporting part for a replacement construction in a human body and intended to be secured in implants with unique longitudinal courses, and using at least one working model in which said longitudinal courses and connection surfaces of said implants are represented by representation members, said method comprising the steps of:

reading an outer shape of said working model with a surface reading member to generate an electrical representation of said outer shape;
supplying computer equipment with said electrical representation;
performing calculations in said computer equipment to establish a shape for said supporting part, whereby said supporting part is accommodated within said outer shape of said replacement construction;
generating machining information with said computer means which represents said shape of said supporting part;
providing said machining information to a machining device;
machining a blank with said machining device such that said blank obtains said shape;
creating an electro-erosion tool by providing electro-erosion electrodes in said working model at positions for said representation members and arranging said electrodes in the same longitudinal direction as said representation members;
and
creating a recess in said blank with said electro-erosion tool for contact members, whereby said blank can be anchored on said implants via connection surfaces on said contact members, said recess and said contact members have longitudinal axes which coincide with axes of said implants.

6 more elements

Dependencies are inferred from the claim text.