AUTOMATED GENERATION OF BONE TREATMENT MEANS

Abstract

The invention relates to a method for producing bone treatment means, with a first step in which original 3D data of a bone or of a bone portion of a specific patient to be treated are made available, wherein a site to be treated is present inside the bone or the bone portion, with a second step involving the use of 3D data of a reference patient who has been selected according to predefined criteria, wherein the 3D data correspond to the bone or to the bone portion with the site to be treated, and with a third and reconstructive step for supplementing or completing 3D data for the reconstruction of the site to be treated, wherein a mirroring step is used in which 3D data of the specific patient to be treated, which have their origin on a mirror-symmetrical other side of the patient, are superposed, specifically at a site corresponding to the bone or bone portion, in order to obtain the combined 3D data.

Claims

1. A method for producing bone treatment means comprising: a first step in which original 3D data of a bone or a bone portion of a specific patient to be treated are provided, wherein a site to be treated is present inside the bone or the bone portion; a second step of involving 3D data of a reference patient who has been selected according to predefined criteria, wherein the involved 3D data of the reference patient correspond to the bone or the bone portion with the site to be treated and are composed of 3D data of various individual patients by means of formatting a mean value; a reconstructive step for supplementing or completing the 3D data combined of the first step and the second step for the reconstruction of the site to be treated.

2-9. (canceled)

10. An apparatus for carrying out a planning and/or manufacturing method, wherein means are contained and prepared for carrying out the method (4-) according to claim 1.

11. The method according to claim 1, further comprising: a mirroring step in which 3D data of the specific patient to be treated which have their origin on a mirror-symmetrical other side of the patient are superposed, specifically at a site corresponding to the bone or bone portion, in order to obtain the combined 3D data.

12. The method according to claim 1, wherein the first step, the second step, and the reconstructive step are run successively or in parallel.

13. The method according to claim 11, wherein the first step, the second step, the reconstructive step, and the mirroring step are run successively or in parallel.

14. The method according to claim 1, further comprising: after the reconstructive step, a step of producing the bone treatment means in the form of an implant or an osteotomy template.

15. The method according to claim 14, further comprising: a preparation step in which the original 3D data of the patient and/or the 3D data of one or more reference patients are entered into a database and/or are gathered therefrom.

16. The method according to claim 11, further comprising: before the mirroring step and/or after the first step, performing a computer-aided 2D or 3D visualization.

17. The method according to claim 11, further comprising: before or after the mirroring step, selecting defined bone marker points.

18. The method according to claim 1, wherein a bone material defect of the patient to be treated by type of a hole is closed or bridged or filled.

19. The method according to claim 14, further comprising: prior to the producing step, generating 3D data and/or manufacturing data for controlling manufacturing machines.

20. The method according to claim 1, wherein the result of at least the first step, the second step, and the reconstructive step are used for planning the operation.

Description

[0043] Hereinafter the invention shall be illustrated in detail by way of several Figures, wherein:

[0044] FIG. 1 shows a flow chart for carrying out a method according to the invention,

[0045] FIG. 2 shows the course of remodeling on a bone,

[0046] FIG. 3 shows the position of an area to be treated on an exemplary skull and

[0047] FIG. 4 shows the mounting of bone fastening means, by type of an eye socket implant and a maxilla implant.

[0048] The Figures are merely schematic and only serve for the comprehension of the invention. Like elements are provided with like reference numerals.

[0049] The invention is appropriate for use in the skull and face surgery, but it may finally be used on and/or for each osseous structure of a human being or a mammal.

[0050] In a method 1 according to the invention, there is a first step 2 of making available original 3D data of a bone or a bone portion of a specific patient to be treated. This is followed by a second step 3 in which involving of 3D data of a reference patient who has been selected according to predefined criteria takes place, namely the 3D data are gathered in a comparable region which is due to be treated. In a following third step 4 supplementing, possibly comprising trimming, of the 3D data combined of step 2 and step 3 is performed, wherein combining of the data takes place in a partial step.

[0051] Between the first step 2 and the second step 3 also a mirroring step 5 may take place. In said mirroring step, 3D data which are opposed to the longitudinal axis or a plane of symmetry including the longitudinal axis of the body are gathered from a sound site on the ill (specific) patient to be treated and are superposed to the 3D data of the ill side to be treated. It is recommendable to make use of this step.

[0052] In a fourth step 6, also referred to as manufacturing step, a bone treatment means 7 is manufactured for example by type of an implant or an osteotomy template. Thus also virtual surgical planning is possible. Such bone treatment means 7 which is fastened to a bone 8 of a specific individual patient to be treated is shown in FIG. 4. FIG. 3 illustrates an area 9 to be treated on a skull including a bone 8. While the eye socket of said skull has a defect in the area of the region 9 to be treated on the right side when viewed from the patient, the eye socket has no defect on the left side when viewed from the patient.

[0053] The respective data of the sound side are transmitted to the defective site in a mirroring step 10 visualized in FIG. 1. They are morphed thereon/therein. Preceding the previous steps, there is a preparation step 11 in which the 3D data of the patient and/or the 3D data of one or more reference patients are entered into a local or web-based database and, resp., are gathered therefrom.

[0054] FIG. 2 depicts in which way, starting from a bone defect, landmarks are created, then an adjustment takes place in which a superposed form model is used which is not yet adapted to subsequently insert a statistical form model in a calculation cut so as to obtain an adapted model with a replaced bone defect. Markers 12 that form the landmarks are characterized by the reference numeral 12.

[0055] Hence, the point is that so far exclusively e.g. skull defects have been reconstructed in most cases by mirroring of the sound side to the defective side. This is only matching to a limited extent, however, or the results are not sufficient. In the present method, a plurality of skull models is evaluated to form a statistical model. From the statistical model the defective site now can be reconstructed on the defective skull.

[0056] In the method 1 according to the invention a generation step 13 is used.

REFERENCE NUMERALS

[0057] 1 method [0058] 2 first step (data for making available) [0059] 3 second step (involving a statistical model) [0060] 4 third step (supplementing plus trimming, where appropriate) [0061] 5 mirroring step [0062] 6 fourth step/manufacturing step [0063] 7 bone treatment means [0064] 8 bone [0065] 9 region to be treated [0066] 10 mirroring step [0067] 11 preparation step [0068] 12 marker [0069] 13 generation step