Abstract: A bone clamp including two or more clamping members configured to clampingly receive a bone therebetween. The bone clamp further includes a basis supporting at least two of the clamping members at a first distance to each other. At least one of the at least two clamping members has a body and is rotatably supported by the basis. The at least one rotatably supported clamping member has a bone engaging structure extending helically along at least a part of a length of its body. The bone engaging structure is configured to engage a side surface of the bone upon rotation of the at least one rotatably supported clamping member. Depending on the direction of the rotation, the rotatably supported clamping member advances along the side surface of the bone either in a downward direction for mounting the bone clamp or in an upward direction for dismounting the bone clamp.

Abstract: A method, a system, and a computer program for determining a visualization of content to be displayed to a surgeon on a display of a portable display device are provided. First pose data indicative a first pose of an anatomical feature of a patient in an operating room and second pose data indicative of a second pose of a portable display device in the operating room are obtained. Based on the first pose data and the second pose data, a third pose of a surgeon relative to the patient is estimated. Based on the estimated third pose, a visualization of content to be displayed to the surgeon on a display of the portable display device is determined.

Abstract: A method, a computer program product, a device, and a surgical navigation system for determining a marker arrangement that defines positions of markers of a tracker are provided. The markers are detectable by a first imaging modality and a second imaging modality that is different from the first imaging modality. The method comprises receiving first image data of the markers that were captured using the first imaging modality and receiving second image data of the markers that were captured using the second imaging modality. The method further comprises determining the marker arrangement based on the first and second image data.

Abstract: Navigation system and method for tracking movement of a patient during surgery. Image data is acquired by imaging the patient with a base layer of a skin-based patient tracking apparatus secured to the patient's skin. The skin-based patient tracking apparatus includes a plurality of optical surgical tracking elements. A computer processor arrangement is adapted to implement a navigation routine. The patient position is registered to the image data. The movement of the patient is tracked based on movement of the plurality of optical surgical tracking elements. The movement of the patient's skin is tracked by determining positions of the optical surgical tracking elements both before and after a deformation of the skin-based patient tracking apparatus. Movement of the patient's skin results in corresponding movement of the surgical tracking elements to provide a dynamic reference frame for use in continuously tracking movement of a patient's skin during surgery.

Abstract: The present disclosure relates to a housing assembly for accommodating printed circuit boards (PCBs). The housing assembly comprises a first housing portion configured to accommodate a first PCB, a second housing portion configured to accommodate a second PCB, and a separating portion for separating the first housing portion from the second housing portion. The separating portion comprises a first separating region in which the first housing portion and the second housing portion overlap and a second separating region that extends beyond the second housing portion and covers the first housing portion. The second separating region comprises one or more convection openings.

Abstract: A method, a controller, and a surgical hybrid navigation system for transferring a registration of three dimensional image data of a surgical object from a first to a second surgical navigation system are described. A first tracker that is detectable by a first detector of the first surgical navigation system is arranged in a fixed spatial relationship with the surgical object and a second tracker that is detectable by a second detector of the second surgical navigation system is arranged in a fixed spatial relationship with the surgical object. The method includes registering the three dimensional image data of the surgical object in a first coordinate system of the first surgical navigation system and determining a first position and orientation of the first tracker in the first coordinate system and a second position and orientation of the second tracker in a second coordinate system of the second surgical navigation system.

Abstract: Disclosed is a method for use in surgical navigation, the method being performed by a computing system. A first pose of a first tracker is determined in exactly four degrees of freedom, DOF, and a second pose of a second tracker is determined in exactly four DOF. Based on the first pose and the second pose, a third pose of a virtual tracker may be determined in six DOF. The virtual tracker has a fixed spatial relationship relative to the anatomical object in the six DOF of the third pose. A transformation between the third pose and a fourth pose of the anatomical object in six DOF in an image coordinate system of image data of the anatomical object may be determined or obtained. The present disclosure further relates to a computing system, a surgical navigation system and a computer program product.

Abstract: Navigation system and method for tracking movement of a patient during surgery. Image data is acquired by imaging the patient with a base layer of a skin-based patient tracking apparatus secured to the patient's skin. The skin-based patient tracking apparatus includes a plurality of optical surgical tracking elements. A computer processor arrangement is adapted to implement a navigation routine. The patient position is registered to the image data. The movement of the patient is tracked based on movement of the plurality of optical surgical tracking elements. The movement of the patient's skin is tracked by determining positions of the optical surgical tracking elements both before and after a deformation of the skin-based patient tracking apparatus. Movement of the patient's skin results in corresponding movement of the surgical tracking elements to provide a dynamic reference frame for use in continuously tracking movement of a patient's skin during surgery.

Abstract: An optical tracker and a surgical device. The surgical device includes a shaft defining a longitudinal axis. The shaft has a first shaft portion configured to be inserted into a patient, and a second shaft portion configured to be located outside the patient when the first shaft portion is inserted in the patient. The surgical device further includes an actuation member actuatable relative to the first shaft portion, and an operation member operable relative to the second shaft portion. The operation member is configured to actuate the actuation member when being operated. Further, the surgical device includes a tracker coupled with the operation member so that operation of the operation member causes the tracker to move relative to the shaft, such as to rotate around the longitudinal axis.

Abstract: A field generator assembly for surgical navigation is provided. The field generator assembly comprises a field generator configured to generate an electromagnetic field, an attachment member configured to attach the field generator to a body of a patient, at least one first arm comprising a first portion configured to be in contact with a surface of the body of the patient when the field generator is attached to the body, and a second portion movably attached relative to the field generator, and at least one sensor configured to measure a spatial relationship between the at least one arm and the field generator. Also provided is a method of obtaining a relative pose between a surface of the body and a field generator.

Abstract: A method and a device for determining a respective position of one or more markers in a 3D image coordinate system are provided. A plurality of image data sets taken from a 3D volume in which an object and one or more markers are disposed. The 3D volume comprises a central volume containing at least a portion of the object and further comprises a peripheral volume adjacent to the central volume and containing the one or more markers. The image data sets have been taken from at least one of different positions and different orientations relative to the object. A first subset comprises image data sets that each includes at least one dedicated marker of the one or more markers and a second subset comprises at least one image data set that does not include the at least one dedicated marker. The method further comprises determining, from the image data sets, a position of the at least one dedicated marker in a 3D image coordinate system of a 3D reconstruction of the central volume with the object portion.

Abstract: A method, a controller, and a surgical hybrid navigation system for transferring a registration of three dimensional image data of a surgical object from a first to a second surgical navigation system are described. A first tracker that is detectable by a first detector of the first surgical navigation system is arranged in a fixed spatial relationship with the surgical object and a second tracker that is detectable by a second detector of the second surgical navigation system is arranged in a fixed spatial relationship with the surgical object. The method includes registering the three dimensional image data of the surgical object in a first coordinate system of the first surgical navigation system and determining a first position and orientation of the first tracker in the first coordinate system and a second position and orientation of the second tracker in a second coordinate system of the second surgical navigation system.

Abstract: A navigation system for and method of tracking the position of the work target is provided. The navigation system can detect distortions of a trackable device during the navigation procedure and compensate for such deformation in a way that reduces or eliminates navigational error and/or avoids or reduces the need to re-set the navigation system during a navigation procedure.

Abstract: Navigation system and method for tracking movement of a patient during surgery. Image data is acquired by imaging the patient with a base layer of a skin-based patient tracking apparatus secured to the patient's skin. The skin-based patient tracking apparatus includes a plurality of optical surgical tracking elements. A computer processor arrangement is adapted to implement a navigation routine. The patient position is registered to the image data. The movement of the patient is tracked based on movement of the plurality of optical surgical tracking elements. The movement of the patient's skin is tracked by determining positions of the optical surgical tracking elements both before and after a deformation of the skin-based patient tracking apparatus. Movement of the patient's skin results in corresponding movement of the surgical tracking elements to provide a dynamic reference frame for use in continuously tracking movement of a patient's skin during surgery.

Abstract: A surgical navigation system is disclosed including a camera that is fixedly attached to a patient. The camera space merges with the patient space and thereby eliminates the need for a separate patient tracker. The surgical navigation system calculates the position of a surgical tool with a tracking device in view of the camera and shows on a display device the position of the surgical tool with respect to the patient superimposed and in correlation with a scan image of the patient.

Abstract: A surgical trajectory guide to guide a medical device to a pivot point has a base that can be attached to a patient, an axial guide member connected with the base and aligned with a pivot point along a first axis in fixed relation to the base and a second axis perpendicular to the first axis. The guide member has a longitudinal axis, and is connected to the base such that the longitudinal axis always passes through the pivot point, and the axial guide member is prevented from rotating around the longitudinal axis. The guide further has at least one electronic angle sensor that can automatically sense a first angle of the axial guide member relative to the local gravity vector about the first axis and a second angle of the axial guide member relative to the local gravity vector about the second axis without having to level the base.

Abstract: A navigation system includes a display monitor, a CPU, and a camera, wherein the camera is mounted to a back side of the display monitor to form a monitor unit. One or more reference units are placed on a body while acquiring an image data set, and are tracked during a surgical operation by the monitor unit to register and correlate a position of a visual image of an exterior surface of the body with the image data set including information concerning internal structures of the body. The image data set is displayed on the display monitor superimposed in registration over the visible image of the exterior of the body with an angle of view and aperture in accordance with the actual position of the camera, whereby the display monitor displays the internal structures corresponding to the line-of-sight of the camera and the observer.

Abstract: A navigation system for and method of tracking the position of the work target is provided. The navigation system can detect distortions of a trackable device during the navigation procedure and compensate for such deformation in a way that reduces or eliminates navigational error and/or avoids or reduces the need to re-set the navigation system during a navigation procedure.

Abstract: A surgical navigation system is disclosed including a camera that is fixedly attached to a patient. The camera space merges with the patient space and thereby eliminates the need for a separate patient tracker. The surgical navigation system calculates the position of a surgical tool with a tracking device in view of the camera and shows on a display device the position of the surgical tool with respect to the patient superimposed and in correlation with a scan image of the patient.