Abstract: In at least one embodiment, a search of spatial data is performed by reformulating the search problem as a ray tracing problem. In at least one embodiment, the ray tracing problem is solved using a graphics processing unit.

Abstract: In at least one embodiment, a search of spatial data is performed by reformulating the search problem as a ray tracing problem. In at least one embodiment, the ray tracing problem is solved using a graphics processing unit.

Abstract: A device for clamping fixation elements, which have been inserted into bone, for manipulating fragments of a fractured bone. The device incorporating a hollow body with a cavity having a wall, a clamping body moveable within the cavity between a first position and a second position, and a clamping device operably connected to the clamping body for moving the clamping body between the first position and the second position. The device being sized and configured so that when the clamping body is in the first position a free end of the fixation element(s) may be positioned between the clamping body and the wall of the cavity. Once the fixation element(s) is properly positioned within the cavity, the clamping device may be used to move the clamping body into the cavity, thereby wedging the fixation element(s) between the clamping body and the wall of the cavity. A bone fragment may then be manipulated using the device.

Abstract: A device for clamping fixation elements, which have been inserted into bone, for manipulating fragments of a fractured bone. The device incorporating a hollow body with a cavity having a wall, a clamping body moveable within the cavity between a first position and a second position, and a clamping device operably connected to the clamping body for moving the clamping body between the first position and the second position. The device being sized and configured so that when the clamping body is in the first position a free end of the fixation element(s) may be positioned between the clamping body and the wall of the cavity. Once the fixation element(s) is properly positioned within the cavity, the clamping device may be used to move the clamping body into the cavity, thereby wedging the fixation element(s) between the clamping body and the wall of the cavity. A bone fragment may then be manipulated using the device.

Abstract: A device for clamping fixation elements, which have been inserted into bone, for manipulating fragments of a fractured bone. The device incorporating a hollow body with a cavity having a wall, a clamping body moveable within the cavity between a first position and a second position, and a clamping device operably connected to the clamping body for moving the clamping body between the first position and the second position. The device being sized and configured so that when the clamping body is in the first position a free end of the fixation element(s) may be positioned between the clamping body and the wall of the cavity. Once the fixation element(s) is properly positioned within the cavity, the clamping device may be used to move the clamping body into the cavity, thereby wedging the fixation element(s) between the clamping body and the wall of the cavity. A bone fragment may then be manipulated using the device.

Abstract: A device for clamping fixation elements, which have been inserted into bone, for manipulating fragments of a fractured bone. The device incorporating a hollow body with a cavity having a wall, a clamping body moveable within the cavity between a first position and a second position, and a clamping device operably connected to the clamping body for moving the clamping body between the first position and the second position. The device being sized and configured so that when the clamping body is in the first position a free end of the fixation element(s) may be positioned between the clamping body and the wall of the cavity. Once the fixation element(s) is properly positioned within the cavity, the clamping device may be used to move the clamping body into the cavity, thereby wedging the fixation element(s) between the clamping body and the wall of the cavity. A bone fragment may then be manipulated using the device.

Abstract: A device to be used in combination with a surgical navigation system for defining the position of a straight line determined by an operating surgeon within a three-dimensional coordinate system in an operating theater. The devices includes a body (1) with a surface (2) and at least three markers (3) which emit waves (19) and the position of which can be determined within a three-dimensional coordinate system by a position detector belonging to the surgical navigation system. A laser (4) mounted on the body (1) emits a laser beam (5), directed away from the body (1), which has a geometrical central beam (6) and a wavelength in the visible range. The laser beam (5) is emitted in a geometrically defined position relative to the markers (3) so that the position of the central beam (6) relative to the three-dimensional coordinate system can be calculated from the previously measured positions of the markers (3) by a computer, which is also part of the surgical navigation system.

Abstract: A device for moving an X-ray apparatus embodied in the form of a C-bow (9) in a controlled manner, the C-bow (9) being mounted on a pedestal (31) provided with motor-driven rollers (3) controllable in their direction of travel in such a way that it is displaceable in parallel in relation to at least two axes (18;19) and rotatable relative to three axes (18; 19, 21), each movement of the C-bow (9) with respect to a coordinate system (29) which is stationary relative to the room being carried out via controllable drive devices (6;7;37;38). These drive devices (6; 7; 37; 38) are controlled either by means of a control device (39;48) or via a computer (23), said control device being operated either via a sterile control console or by voice control. Any positions and projections of the C-bow (9) that have once been adjusted may be stored in the computer (23), so that a desired position and projection may be reproduced again.

Abstract: A device to be used in combination with a surgical navigation system for defining the position of a straight line determined by an operating surgeon within a three-dimensional coordinate system in an operating theatre, including a body (1) with a surface (2) and at least three markers (3) which emit waves (19) and the position of which can be determined within a tree-dimensional coordinate system by a position detector belonging to the surgical navigation system. A laser (4) mounted on said body (1) emits a laser beam (5), directed away from the body (1), which has a geometrical central beam (6) and a wave length in the visible range. The laser beam (5) is emitted in a geometrically defined position in relation to the markers (3) so that the position of the central beam (6) in relation to the three-dimensional coordinate system can be calculated from the previously measured positions of said markers (3) by a computer which is also part of the surgical navigation system.