METHOD FOR OBTAINING CORRECTION TARGET SKULL SHAPE AND METHOD FOR GENERATING PLAGIOCEPHALY CORRECTION TARGET DATA

Title:

METHOD FOR OBTAINING CORRECTION TARGET SKULL SHAPE AND METHOD FOR GENERATING PLAGIOCEPHALY CORRECTION TARGET DATA

Document Type and Number:

WIPO Patent Application WO/2021/090760

Kind Code:

A1

Abstract:

This method for obtaining a correction target skull shape comprises: a scan data reading step for reading three-dimensional scan data indicating the skull shape of a patient; a plagiocephaly ideal correction data generation step for generating plagiocephaly ideal correction data indicating the plagiocephaly ideal correction shape of the patient, on the basis of the three-dimensional scan data; a plagiocephaly correction rate designation step for specifying the plagiocephaly correction rate in accordance with the degree of plagiocephaly; and a plagiocephaly correction target data generation step for generating plagiocephaly correction target data indicating a plagiocephaly correction target skull shape on the basis of the plagiocephaly ideal correction data and the plagiocephaly correction rate.　Further, a method for generating orthodontic helmet production data for producing an orthodontic helmet for correcting deformed skull with a three-dimensional printer comprises: an input step for importing correction target skull shape data indicating the correction target skull shape into three-dimensional CAD software and generating mesh data indicating a correction target skull surface shape; an offset step for offsetting mesh data by a predetermined amount in an expansion direction; a deletion step for deleting unnecessary parts from the mesh data; a thickness imparting step for imparting a predetermined thickness to the mesh data; and an output step for outputting mesh data in stl format, which is offset in the expansion direction, has unnecessary parts removed, and is given a thickness.

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Inventors:

ONO HIDEAKI (JP)
NAKANO HIROSHI (JP)
NAGURA YASUO (JP)
TAKAMORI RYOMA (JP)

Application Number:

PCT/JP2020/040665

Publication Date:

May 14, 2021

Filing Date:

October 29, 2020

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Assignee:

JAPAN MEDICAL COMPANY INC (JP)

International Classes:

B33Y50/00; A61F5/01; B29C64/386; G06F30/10

Domestic Patent References:

WO2019190968A1

2019-10-03

Foreign References:

US20190167463A1	2019-06-06
US20190015238A1	2019-01-17

Attorney, Agent or Firm:

ONO, Hisazumi et al. (JP)

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