Rex Medical, L.p.

Intai Technology Corporation

Ying-Yi Cheng

Chen-Tai Lin

Shan-Chien Cheng

Shih-Chang Chuang

Kuo-Tung Kao

Sheng-Fang Lin

Chih-Yen Chiang

A surgical navigation method includes obtaining a three-dimensional image; selecting a viewing angle direction; generating one or more two-dimensional images arranged along the viewing angle direction from the three-dimensional image; superimposing the one or more two-dimensional images along the viewing angle direction to form a two-dimensional superimposed image; and guiding a movement of a virtual surgical instrument into the two-dimensional superimposed image.

Method and system for surgical navigation

A method for registering a two-dimensional image data set with a three-dimensional image data set of a body of interest is discloses herein. The method includes the following steps: obtaining a first spatial parameter of a first registered virtual camera, wherein the first registered virtual camera is positioned corresponding to a first two-dimensional image of the two-dimensional image data set; and adjusting a second spatial parameter of the first unregistered virtual camera with the first spatial parameter of the first registered virtual camera, wherein the first unregistered virtual camera is failed to be positioned corresponding to the first two-dimensional image of the two-dimensional image data set.

Method and navigation system for registering two-dimensional image data set with three-dimensional image data set of body of interest

A method for registering a two-dimensional image data set with a three-dimensional image data set of a body of interest is discloses herein. The method includes the following steps: defining a first vector of a registered virtual camera in a coordinate system of the three-dimensional image data et; obtaining a first transformed vector of an unregistered virtual camera in the coordinate system of the three-dimensional image data set by transforming the first vector of the registered virtual camera through at least one transforming matrix; defining a focal point of the unregistered virtual camera at a reference point of the two-dimensional image data set in the coordinate system of the three-dimensional image data set; and repositioning the unregistered virtual camera according to the first transformed vector and the focal point of the unregistered virtual camera.

A method for registering a two-dimensional image data set with a three-dimensional image data set of a body of interest is discloses herein. The method includes the following steps: adjusting a first virtual camera according to a distance parameter calculated corresponding to the two-dimensional image data set and the body of interest; rotating the first virtual camera according to an angle difference between a first vector and a second vector; and rotating the first virtual camera according to an angle which is corresponding to a maximum similarity value of a plurality of similarity values calculated in accordance with reconstructed images of the three-dimensional image data set which includes one generated by the first virtual camera and the others generated by other virtual cameras with different angles or different pixels from the one generated by the first virtual camera and the two-dimensional image data set.

A surgical navigation method includes selecting one or more two-dimensional images from a three-dimensional image. The method further includes adjusting a portion of the two-dimensional images along a viewing direction. The method also includes superimposing the portion of the two-dimensional images along the viewing direction to form a two-dimensional superimposed image. The method further incudes guiding movement of a virtual surgical instrument into the two-dimensional superimposed image.

A dynamic reference deviation detecting method is used for detecting a deviation of a dynamic reference coordinate system. A coordinate detecting step is for detecting and recording a first initial coordinate and a second initial coordinate. A first coordinate variation calculating step is for calculating a difference between a first instantaneous coordinate and the first initial coordinate to obtain a first difference value. A second coordinate variation calculating step is for calculating a difference between a second instantaneous coordinate and the second initial coordinate to obtain a second difference value. A relative coordinate variation calculating step is for obtaining a relative difference value. A dynamic reference deviation determining step is for determining whether or not the dynamic reference coordinate system is deviated according to the first difference value, the second difference value and the relative difference value.

Dynamic reference deviation detecting method and system thereof

A pre-planning interface displaying step of a method for verifying panoramic images of implants is for displaying a picture, a menu and a cursor on a screen. An implant trajectory pattern adding step is for moving the cursor to select an implant adding item by a user and then generating the implant trajectory pattern in the picture. An implant trajectory pattern adjusting step is for controlling the cursor to adjust a position of the implant trajectory pattern and then move the implant trajectory pattern from a starting position to a target position in the picture. A panoramic image verifying step is for rotating the surgical site pattern around the implant trajectory pattern at a viewing angle according to the target position and the implant trajectory pattern as a central axis, and the viewing angle is greater than 0 degrees and smaller than or equal to 180 degrees.

Method and system for verifying panoramic images of implants

A no-touch surgical navigation method for guiding a surgical instrument corresponding to a part of a patient's anatomy is provided. An image registration step is for matching the preoperative implant device planning image and the part of the patient's anatomy via a spatial coordinate transformation relationship. An instrument checking step is for identifying the surgical instrument, and then calibrating a size of the surgical instrument to display an instrument tip mark on the displaying device. An implant device placement selecting step is for moving the surgical instrument by a user, and then the instrument tip mark is synchronously moved with the surgical instrument to select a virtual surgical instrument pattern. A skin incision and trajectory guiding step is for moving the surgical instrument according to a skin incision and trajectory guiding picture so as to move the instrument tip mark close to a planned surgical position.

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Taichung, Taiwan

Ying-Yi Cheng