Express-registering regions of the body

Patent metadata

Field	Value
Publication number	US-9033997-B2
Application number	US-79300210-A
Country	US
Kind code	B2
Filing date	Jun 3, 2010
Priority date	Jun 3, 2009
Publication date	May 19, 2015
Grant date	May 19, 2015

Abstract

The present invention relates to a method for determining the region of the body in which an anatomical part of the body is situated, said method including the following steps:
anatomical point data is provided which includes information concerning a spatial pattern of positions of patient landmarks of a part of a patient's body which corresponds to the anatomical part of the body; landmark data is provided which includes information concerning a spatial pattern of positions of model landmarks of a model of the anatomical part of a patient's body;

wherein, assuming that
the patient landmarks represent the same landmarks as the model landmarks,

the region of the body in which the part of the patient's body is situated is determined on the basis of the landmark data and the anatomical point data.

First claim

What is claimed is:

1. A non-transitory computer readable medium including a program for determining a region of the body in which an anatomical part of the body is situated, said program being configured to cause a computer on which the program is executed to:
obtain anatomical point data which includes information concerning a spatial pattern of positions of patient landmarks of a part of a patient's body which corresponds to the anatomical part of the body;
obtain landmark data which includes information concerning a spatial pattern of positions of model landmarks of a model of the anatomical part of the patient's body;
determine, based on the landmark data and the anatomical point data and an assumption that the patient landmarks represent the same landmarks as the model landmarks, the region of the body in which the part of the patient's body is situated, wherein the patient landmarks include an artificial landmark on the part of the patient's body and anatomical landmarks on the part of the patient's body, and the model landmarks include an artificial landmark in the model and anatomical landmarks in the model;
wherein the position of the artificial landmark on the part of the patient's body corresponds
to the position of a marker device on the part of the patient's body.

2. The program according to claim 1 , wherein the anatomical point data is provided in such a way that the positions of patient landmarks are not directly assigned to positions of model landmarks, wherein elements of a set of patient landmarks are equal to elements of a set of model landmarks.

3. The program according to claim 1 , wherein the information concerning the spatial pattern of the positions of the model landmarks describes a positional distribution of the model landmarks, and the information concerning the spatial pattern of the positions of the patient landmarks describes a positional distribution of the patient landmarks.

4. The program according to claim 1 , wherein positional criteria are provided which describe criteria, which are dependent on the region of the body, for the position of the patient landmarks with respect to each other and/or for the position of the model landmarks with respect to each other.

5. The program according to claim 1 , wherein determining the region of the body includes determining an angle between a straight line through at least two particular patient landmarks and/or model landmarks and a perpendicular with respect to a surface section of the part of the patient's body, wherein the position of one of the particular patient landmarks and/or model landmarks includes the surface section.

6. The program according to claim 1 , wherein determining the region of the body includes determining the region of the body to be a left-hand or right-hand side of the body.

7. The program according to claim 1 , further comprising determining information concerning an anterior-posterior direction of the part of the patient's body.

8. The program according to claim 1 , wherein determining the region of the body includes determining the region of the body to be an anterior or posterior side of the body.

9. The program according to claim 1 , further comprising determining information concerning the position of a tibial axis.

10. The program according to claim 1 , further comprising outputting guidance information to a user on the basis of determining the region of the patient's body.

11. A navigation system for determining the region of the body in which an anatomical part of the body is situated, said navigation system including:
a pointer for determining anatomical point data which includes information concerning a spatial pattern of positions of patient landmarks of a part of a patient's body which corresponds to the anatomical part of the body;
a computer-readable storage medium on which landmark data is stored which includes information concerning a spatial pattern of positions of model landmarks of a model of the anatomical part of the patient's body;
a surgical navigation system for comparing the anatomical point data with the landmark data,
a computer-readable medium on which the program according to claim 1 is stored,
wherein the surgical navigation system includes a data processing device which is configured to perform the program according to claim 1 .

12. The system according to claim 11 , which comprises a guidance information device for outputting guidance information which is based on the comparison between the landmark data and the anatomical point data.

Assignees

• Neubauer Timo
• Uhing Frank
• Brainlab Ag

Inventors

• Neubauer Timo
• Uhing Frank

Classifications

• A61B2019/5255

  Human Necessities · mapped topic

• A61B2019/505

  Human Necessities · mapped topic

• A61B19/5244

  Human Necessities · mapped topic

• A61B2019/5268

  Human Necessities · mapped topic

• A61B5/4504 Primary

  Bones (A61B5/4547 takes precedence) · CPC title