Stryker European Holdings I LLC

Mako Surgical Corporation

Stryker European Operations Holdings LLC

Stryker Trauma Gmbh

Michael Kohnen

Arno Blau

Bernd Simon

Nitish Puri

Sukhraj Singh

Udo Pfrengle

Thomas Epting

Holger Müller-Daniels

A method of smoothing a surface mesh includes determining first angles between a first direction and vectors normal to a plurality of faces defined in the surface mesh, determining a set of artifact vertices by including a first vertex of the surface mesh in the set of artifact vertices responsive to the first angles associated with faces adjacent to the first vertex satisfying a first condition, calculating a weighted value for a second vertex of the surface mesh based on a distance from the second vertex to a nearest artifact vertex in the set of artifact vertices, and generating a smoothed surface mesh by using the weighted value in a smoothing algorithm applied to the surface mesh.

Systems and method for smooth segmentation

Methods and systems for selectively smoothing an input surface mesh based on identified staircase artifacts are disclosed. Staircase artifacts may be generated along any one of a surface mesh's coordinate vectors. Vertices in the surface mesh associated with the staircase artifact are identified by comparing normalized angles between normal vectors of a plurality of faces adjacent to a vertex and a reference vector. Multiple reference vectors are used to identify additional artifact vertices. Weighted values may be generated for each vertex of the surface mesh based on the vertex's proximity to an identified artifact vertex. Vertices of a surface mesh may be subjected to a modified smoothing algorithm using the weighted values. The modified smoothing algorithm removes staircase artifacts while better preserving model volume and small model features.

A computer assisted surgery system and a method for operating a computer assisted surgery system is described therein. The system and method includes providing a virtual representation of a medical device to provide an easier application of a medical device, such as an implant or the like. The described system and method allows for simple and fast positioning of a medical device to be applied, such as an implant, for example.

Computer assisted surgery system

Disclosed herein are systems and methods for automatic detection of clinical relevance of images of an anatomical situation. The method includes comparing a first image and a second image and determining whether a difference between the first and second images is at least one of a local type difference and a global type difference. The local type difference is a local difference of the first image and the second image and the global type difference is a global difference between the first image and the second image. The second image is determined as having a clinical relevance if it is determined that the difference between the first image and the second image comprises a local type difference.

Systems and methods for automatic detection and testing of images for clinical relevance

A targeting system is used for positioning of a medical sub device with respect to a medical device. A reference body is reproducibly positioned with respect to a targeting device coupling section and reproducibly positioned with respect to a targeting unit. The targeting unit has a targeting direction and is adjustable with respect to the targeting device so that the targeting direction points toward a medical sub device receptacle of the medical device coupled to the targeting device coupling section. The imaging system is positionable with respect to the targeting device such that the imaging system is capable of imaging a single two-dimensional view of the reference body and the medical sub device receptacle. The evaluation unit generates position data of the single two-dimensional view and to determine from the position data a lateral distance between the targeting direction and a receiving direction of the medical sub device receptacle.

Growing community of inventors

Heitersheim, Germany

Michael Kohnen